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Finding the Third Proportional to 21,587 and 29,167

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Solution

The third proportional to 21,587 and 29,167 is: 39,408.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,587 : 29,167 = 29,167 : x
  2. Step 2: Convert to fraction form
    21,587/29,167 = 29,167/x
  3. Step 3: Cross multiply
    21,587x = 29,167 × 29,167
  4. Step 4: Simplify right side
    21,587x = 850,713,889
  5. Step 5: Solve for x
    x = 850,713,889/21,587
  6. Step 6: Final answer
    x = 39,408.62

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.