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Finding the Third Proportional to 12,781 and 27,506

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Solution

The third proportional to 12,781 and 27,506 is: 59,195.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,781 : 27,506 = 27,506 : x
  2. Step 2: Convert to fraction form
    12,781/27,506 = 27,506/x
  3. Step 3: Cross multiply
    12,781x = 27,506 × 27,506
  4. Step 4: Simplify right side
    12,781x = 756,580,036
  5. Step 5: Solve for x
    x = 756,580,036/12,781
  6. Step 6: Final answer
    x = 59,195.68

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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.