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Finding the Third Proportional to 13,721 and 29,559

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Solution

The third proportional to 13,721 and 29,559 is: 63,678.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721 : 29,559 = 29,559 : x
  2. Step 2: Convert to fraction form
    13,721/29,559 = 29,559/x
  3. Step 3: Cross multiply
    13,721x = 29,559 × 29,559
  4. Step 4: Simplify right side
    13,721x = 873,734,481
  5. Step 5: Solve for x
    x = 873,734,481/13,721
  6. Step 6: Final answer
    x = 63,678.63

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.