What is the missing value in the proportion 4/5 = x/30? A.) 6

B.) 24

C.) 37.5

D.) 29

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right  

Equality Properties

Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of Equality

Step-by-step explanation:

Step 1: Define

Step 2: Solve for x

[Multiplication Property of Equality] Cross-multiply:                                      [Division Property of Equality] Divide 5 on both sides: