# Using a Table of Equivalent Ratios to Find a Missing Quantity in a Ratio

Find the missing quantity in the following table of equivalent ratios.

 Planets Moons 12 18 x 24

### Solution

Step 1:

Since the table gives values of equivalent ratios

$\frac{x}{24} = \frac{12}{18}; x = \frac{12}{18} \times 24 = \frac{12}{18} \times \frac{24}{1} = 16$

Step 2:

So, missing quantity, x = 16

Find the missing quantity in the following table of equivalent ratios.

 Bullocks Horses 3 x 18 24

### Solution

Step 1:

Since the table gives values of equivalent ratios

$\frac{x}{3} = \frac{24}{18}; x = \frac{24}{18} \times 3 = \frac{24}{18} \times \frac{3}{1} = 4$

Step 2:

So, missing quantity, x = 4

Find the missing quantity in the following table of equivalent ratios.

 Buses Drivers 63 28 9 x

### Solution

Step 1:

Since the table gives values of equivalent ratios

$\frac{x}{9} = \frac{28}{63}; x = \frac{28}{63} \times 9 = \frac{28}{63} \times \frac{9}{1} = 4$

Step 2:

So, missing quantity, x = 4