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Finding the Third Proportional to 7,321.50 and 15,471

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Solution

The third proportional to 7,321.50 and 15,471 is: 32,691.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,321.50 : 15,471 = 15,471 : x
  2. Step 2: Convert to fraction form
    7,321.50/15,471 = 15,471/x
  3. Step 3: Cross multiply
    7,321.50x = 15,471 × 15,471
  4. Step 4: Simplify right side
    7,321.50x = 239,351,841
  5. Step 5: Solve for x
    x = 239,351,841/7,321.50
  6. Step 6: Final answer
    x = 32,691.64

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.