Finding the Fourth Proportional to 28,485,728.28, 39,310,251.84 and 15,433,311.60
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Solution
The fourth proportional to 28,485,728.28, 39,310,251.84 and 15,433,311.60 is: 21,297,941.19
Step by Step Solution
- Step 1: Write the proportion equation
28,485,728.28 : 39,310,251.84 = 15,433,311.60 : x - Step 2: Convert to fraction form
28,485,728.28/39,310,251.84 = 15,433,311.60/x - Step 3: Cross multiply
28,485,728.28x = 39,310,251.84 × 15,433,311.60 - Step 4: Simplify right side
28,485,728.28x = 606,687,365,721,193.38 - Step 5: Solve for x
x = 606,687,365,721,193.38/28,485,728.28 - Step 6: Final answer
x = 21,297,941.19
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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.