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Finding the Third Proportional to 15,722 and 21,363

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Solution

The third proportional to 15,722 and 21,363 is: 29,027.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,722 : 21,363 = 21,363 : x
  2. Step 2: Convert to fraction form
    15,722/21,363 = 21,363/x
  3. Step 3: Cross multiply
    15,722x = 21,363 × 21,363
  4. Step 4: Simplify right side
    15,722x = 456,377,769
  5. Step 5: Solve for x
    x = 456,377,769/15,722
  6. Step 6: Final answer
    x = 29,027.97

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.