Finding the Fourth Proportional to 28,928,421.12, 39,909,856.46 and 16,531,863.96
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Solution
The fourth proportional to 28,928,421.12, 39,909,856.46 and 16,531,863.96 is: 22,807,477.63
Step by Step Solution
- Step 1: Write the proportion equation
28,928,421.12 : 39,909,856.46 = 16,531,863.96 : x - Step 2: Convert to fraction form
28,928,421.12/39,909,856.46 = 16,531,863.96/x - Step 3: Cross multiply
28,928,421.12x = 39,909,856.46 × 16,531,863.96 - Step 4: Simplify right side
28,928,421.12x = 659,784,317,659,847.25 - Step 5: Solve for x
x = 659,784,317,659,847.25/28,928,421.12 - Step 6: Final answer
x = 22,807,477.63
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.