The LCM Calculator for 4 Numbers is an online tool that determines the LCM of the given four numbers. BYJU’S Calculator to find the Least common multiple of 4 Numbers, makes calculations simple and interesting. Without solving and utilising our time, we can quickly get the output here.
How to use the LCM Calculator for 4 Numbers?
Learn to use the LCM calculator here for the given four numbers.
Step 1: Mention all the four numbers, whose LCM is required, in the four input fields such as ‘Enter Number 1’, ‘Enter Number 2’, ‘Enter Number 3’, and ‘Enter Number 4’.
Step 2: Click on “Solve” button to get the result
Step 3: The LCM of given four numbers will appear in the output field ‘LCM’.
What is LCM?
LCM or Least Common Multiple is the smallest common multiple among two or more numbers. The methods to find the LCM are:
- Listing the multiples
- Long division method
- Prime factorisation method
For example, if we have to find the LCM of 4,8,12 and 16, then using all the above three methods we can find the LCM.
Finding LCM by listing the multiples
Multiples of 4 = 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48,…
Multiples of 8 = 8, 16, 32, 40, 48, ..
Multiples of 12 = 12, 24, 36, 48,..
Multiples of 16 = 16, 32, 48,..
As we can see here, the smallest common multiple for 4,8,12 and 16 is 48.
Finding LCM by Prime Factorisation
4 = 2 x 2
8 = 2 x 2 x 2
12 = 2 x 2 x 3
16 = 2 x 2 x 2 x 2
By listing the prime factors we have got here most often they have occurred for any given number we get the LCM. Therefore,
LCM (4,8,12,16) = 2 x 2 x 3 x 2 x 2
LCM by Long Division Method
| Divisor | 4 | 8 | 12 | 16 |
| Divisor = 2 | 2 | 4 | 6 | 8 |
| Divisor = 2 | 1 | 2 | 3 | 4 |
| Divisor = 2 | 1 | 1 | 3 | 2 |
| Divisor = 2 | 1 | 1 | 3 | 1 |
| Divisor = 3 | 1 | 1 | 1 | 1 |
Therefore,
LCM = 2 x 2 x 2 x 2 x 3 = 48
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