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Finding the Third Proportional to 20,139 and 27,834

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Solution

The third proportional to 20,139 and 27,834 is: 38,469.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139 : 27,834 = 27,834 : x
  2. Step 2: Convert to fraction form
    20,139/27,834 = 27,834/x
  3. Step 3: Cross multiply
    20,139x = 27,834 × 27,834
  4. Step 4: Simplify right side
    20,139x = 774,731,556
  5. Step 5: Solve for x
    x = 774,731,556/20,139
  6. Step 6: Final answer
    x = 38,469.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.