Question

Th fourth proportion of 6,8and 12 is?

Answer 1

Answer:

The fourth proportion is 16.

Step-by-step explanation:

Let the fourth proportion be x

Four numbers in proportion will have their products of means equal to the product of extremes.

The four numbers are 6 , 8 , 12 , x .

⇒ 6(x) = (8)(12)

⇒ 6x = 96

⇒ x = 16  

Answer 2

$6 \div 8 = 12 \div x \\ 12 \times8 \div 6 = x \\ x = 16$