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Finding the Third Proportional to 20,145 and 27,663

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Solution

The third proportional to 20,145 and 27,663 is: 37,986.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145 : 27,663 = 27,663 : x
  2. Step 2: Convert to fraction form
    20,145/27,663 = 27,663/x
  3. Step 3: Cross multiply
    20,145x = 27,663 × 27,663
  4. Step 4: Simplify right side
    20,145x = 765,241,569
  5. Step 5: Solve for x
    x = 765,241,569/20,145
  6. Step 6: Final answer
    x = 37,986.68

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.