Question

third proportion of 9 and 12​

Answer 1

${\orange{\underline{\underline{\bf{\bigstar\:\: Solution : \:\:\bigstar}}}}}$

in most proportion mean proportion are same so, the last terms called third proportion.

✪ Let, the third proportion be x. ✪

9 : 12 :: 12 : x

$&#8658 \frac{9}{12} = \frac{12}{x}$

$&#8658 \frac{\cancel{9}}{\cancel{12}} = \frac{12}{x}$

$&#8658 \frac{3}{4} = \frac{12}{x}$

$&#8658 3x = 48$

$&#8658 x = \frac{48}{3}$

$&#8658 x = \frac{\cancel{48}}{\cancel{3}}$

$&#8658 x = 16$

✪ ${\green{\boxed{\boxed{\bf{\bigstar\:\: Answer : 16 \:\:\bigstar}}}}}$ ✪

Answer 2

Answer:

9,12 ,c

Step by step explanation:

b*2 = ac

12*2 = 9c

144 = 9c

144/9 = c

16 = c..