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Finding the Third Proportional to 20,267 and 31,631

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Solution

The third proportional to 20,267 and 31,631 is: 49,366.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,267 : 31,631 = 31,631 : x
  2. Step 2: Convert to fraction form
    20,267/31,631 = 31,631/x
  3. Step 3: Cross multiply
    20,267x = 31,631 × 31,631
  4. Step 4: Simplify right side
    20,267x = 1,000,520,161
  5. Step 5: Solve for x
    x = 1,000,520,161/20,267
  6. Step 6: Final answer
    x = 49,366.96

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.