Question

What is unknown number in proportion?

Answer 1

x = 2.4/20= 0.12

Explanation:

Multiply both sides by 4 to eliminate the fraction 1/4:

1 20

--- = ------

x 2.4

Next, we cross-multiply. This eliminates the fractions:

20x = 2.4

Dividing both sides by 20 results in an equation for x: x = 2.4/20= 0.12