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Finding the Third Proportional to 10,581.50 and 15,539

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Solution

The third proportional to 10,581.50 and 15,539 is: 22,819.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,581.50 : 15,539 = 15,539 : x
  2. Step 2: Convert to fraction form
    10,581.50/15,539 = 15,539/x
  3. Step 3: Cross multiply
    10,581.50x = 15,539 × 15,539
  4. Step 4: Simplify right side
    10,581.50x = 241,460,521
  5. Step 5: Solve for x
    x = 241,460,521/10,581.50
  6. Step 6: Final answer
    x = 22,819.12

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.