Find the missing number

/6 = 28/42

To find the missing number, we can set up a proportion by dividing both sides of the equation:

6 represents x, the missing number.
28 represents 42.

So, we have:
6/28 = x/42

Now, we can cross-multiply:
28 * x = 6 * 42

Simplifying:
28x = 252

To isolate x, we divide both sides of the equation by 28:
x = 252/28

Simplifying:
x = 9

Therefore, the missing number is 9.