Finding the Fourth Proportional to 28,957,974.12, 39,962,483.46 and 15,906,439.08
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Solution
The fourth proportional to 28,957,974.12, 39,962,483.46 and 15,906,439.08 is: 21,951,149.14
Step by Step Solution
- Step 1: Write the proportion equation
28,957,974.12 : 39,962,483.46 = 15,906,439.08 : x - Step 2: Convert to fraction form
28,957,974.12/39,962,483.46 = 15,906,439.08/x - Step 3: Cross multiply
28,957,974.12x = 39,962,483.46 × 15,906,439.08 - Step 4: Simplify right side
28,957,974.12x = 635,660,808,641,997.62 - Step 5: Solve for x
x = 635,660,808,641,997.62/28,957,974.12 - Step 6: Final answer
x = 21,951,149.14
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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.