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Finding the Third Proportional to 15,906 and 21,600

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Solution

The third proportional to 15,906 and 21,600 is: 29,332.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,906 : 21,600 = 21,600 : x
  2. Step 2: Convert to fraction form
    15,906/21,600 = 21,600/x
  3. Step 3: Cross multiply
    15,906x = 21,600 × 21,600
  4. Step 4: Simplify right side
    15,906x = 466,560,000
  5. Step 5: Solve for x
    x = 466,560,000/15,906
  6. Step 6: Final answer
    x = 29,332.33

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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.