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Finding the Third Proportional to 19,881 and 27,559

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Solution

The third proportional to 19,881 and 27,559 is: 38,202.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,881 : 27,559 = 27,559 : x
  2. Step 2: Convert to fraction form
    19,881/27,559 = 27,559/x
  3. Step 3: Cross multiply
    19,881x = 27,559 × 27,559
  4. Step 4: Simplify right side
    19,881x = 759,498,481
  5. Step 5: Solve for x
    x = 759,498,481/19,881
  6. Step 6: Final answer
    x = 38,202.23

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.