Question

Check 20,18,5,6 are in proportion or not

Answer 1

hola mate,

Refer above attachment for your answer.

Answer 2

$\huge\mathtt{Required \: Answer:-}$

$According \: to \: Question, \: The \: given \: numbers \: are \: 20, \: 18, \: 5, \: 6. \\ So, \: 20 : 18 \: = \: \frac{20}{18} \: = \: \frac{10}{9} \\ 5 : 6 \: = \: \frac{5}{6} \\ (20 : 18) ≠ (5 : 6) \\ Hence, \: 20, \: 18, \: 5 \: and \: 6 \: are \: not \: in \: proportion.$