Final answer:
To solve the proportion X/15 = 4/9, cross multiplication is used to find the value of X. The solution is X = 6.67.
Step-by-step explanation:
To solve this proportion, cross multiplication is used.
x/15 = 4/9.
Step 1: Multiply the numerators and the denominators across the equal sign.
x × 9 = 4 × 15.
Step 2: Simplify both sides of the equation.
9x = 60.
Step 3: Divide both sides of the equation by the coefficient of x, which is 9.
x = 60/9.
x = 6.67 (rounded to two decimal places).