Finding the Fourth Proportional to 15,216,063.30, 20,998,972.17 and 8,340,835.14
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Solution
The fourth proportional to 15,216,063.30, 20,998,972.17 and 8,340,835.14 is: 11,510,793.66
Step by Step Solution
- Step 1: Write the proportion equation
15,216,063.30 : 20,998,972.17 = 8,340,835.14 : x - Step 2: Convert to fraction form
15,216,063.30/20,998,972.17 = 8,340,835.14/x - Step 3: Cross multiply
15,216,063.30x = 20,998,972.17 × 8,340,835.14 - Step 4: Simplify right side
15,216,063.30x = 175,148,964,979,418.06 - Step 5: Solve for x
x = 175,148,964,979,418.06/15,216,063.30 - Step 6: Final answer
x = 11,510,793.66
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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.