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Finding the Third Proportional to 16,721 and 22,381.50

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Solution

The third proportional to 16,721 and 22,381.50 is: 29,958.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,721 : 22,381.50 = 22,381.50 : x
  2. Step 2: Convert to fraction form
    16,721/22,381.50 = 22,381.50/x
  3. Step 3: Cross multiply
    16,721x = 22,381.50 × 22,381.50
  4. Step 4: Simplify right side
    16,721x = 500,931,542.25
  5. Step 5: Solve for x
    x = 500,931,542.25/16,721
  6. Step 6: Final answer
    x = 29,958.23

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.