Find Least Common Multiple of 3, 6 and 27 using ladder method..

LCM( 3, 6, 27 ) = 54

Step 1 : Place the numbers inside division bar:

Step 2 : Find a prime number which can divide at least two of your numbers.

In this example we can divide by 3. If any number is not divisible by 3 write it down unchanged.

Step 4 : LCM is a product of numbers into L shape.

LCM = 3 · 1 · 2 · 9 = 54

This solution can be visualized using a Venn diagram.

The LCM is equal to the product of all the numbers on the diagram.