Finding the Fourth Proportional to 28,937,771.92, 39,933,967.62 and 15,885,252.96
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Solution
The fourth proportional to 28,937,771.92, 39,933,967.62 and 15,885,252.96 is: 21,921,562.55
Step by Step Solution
- Step 1: Write the proportion equation
28,937,771.92 : 39,933,967.62 = 15,885,252.96 : x - Step 2: Convert to fraction form
28,937,771.92/39,933,967.62 = 15,885,252.96/x - Step 3: Cross multiply
28,937,771.92x = 39,933,967.62 × 15,885,252.96 - Step 4: Simplify right side
28,937,771.92x = 634,361,177,340,149.12 - Step 5: Solve for x
x = 634,361,177,340,149.12/28,937,771.92 - Step 6: Final answer
x = 21,921,562.55
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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.