Question

Fill in the blanks so that the four terms are in proportion. b) 6:12 :: : 18​

Answer 1

Let the missing term be x

so, 6:12::x:18

$\frac{6}{12} = \frac{x}{18}$

$12x = 6 \times 18$

$x = \frac{6 \times 18}{12}$

$x = 9$

so, the missing term is 9

6:12::9:18