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Finding the Third Proportional to 20,722 and 31,092

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Solution

The third proportional to 20,722 and 31,092 is: 46,651.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722 : 31,092 = 31,092 : x
  2. Step 2: Convert to fraction form
    20,722/31,092 = 31,092/x
  3. Step 3: Cross multiply
    20,722x = 31,092 × 31,092
  4. Step 4: Simplify right side
    20,722x = 966,712,464
  5. Step 5: Solve for x
    x = 966,712,464/20,722
  6. Step 6: Final answer
    x = 46,651.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.