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Finding the Third Proportional to 15,489 and 17,703

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Solution

The third proportional to 15,489 and 17,703 is: 20,233.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,489 : 17,703 = 17,703 : x
  2. Step 2: Convert to fraction form
    15,489/17,703 = 17,703/x
  3. Step 3: Cross multiply
    15,489x = 17,703 × 17,703
  4. Step 4: Simplify right side
    15,489x = 313,396,209
  5. Step 5: Solve for x
    x = 313,396,209/15,489
  6. Step 6: Final answer
    x = 20,233.47

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Why These Related Problems?

These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.