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Finding the Third Proportional to 15,658 and 21,327

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Solution

The third proportional to 15,658 and 21,327 is: 29,048.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,658 : 21,327 = 21,327 : x
  2. Step 2: Convert to fraction form
    15,658/21,327 = 21,327/x
  3. Step 3: Cross multiply
    15,658x = 21,327 × 21,327
  4. Step 4: Simplify right side
    15,658x = 454,840,929
  5. Step 5: Solve for x
    x = 454,840,929/15,658
  6. Step 6: Final answer
    x = 29,048.47

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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.