Finding the Fourth Proportional to 20,972,219.16, 28,942,560.36 and 11,679,789.17
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Solution
The fourth proportional to 20,972,219.16, 28,942,560.36 and 11,679,789.17 is: 16,118,609.12
Step by Step Solution
- Step 1: Write the proportion equation
20,972,219.16 : 28,942,560.36 = 11,679,789.17 : x - Step 2: Convert to fraction form
20,972,219.16/28,942,560.36 = 11,679,789.17/x - Step 3: Cross multiply
20,972,219.16x = 28,942,560.36 × 11,679,789.17 - Step 4: Simplify right side
20,972,219.16x = 338,043,003,044,799.31 - Step 5: Solve for x
x = 338,043,003,044,799.31/20,972,219.16 - Step 6: Final answer
x = 16,118,609.12
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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.