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Finding the Third Proportional to 12,486 and 27,420

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Solution

The third proportional to 12,486 and 27,420 is: 60,215.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,486 : 27,420 = 27,420 : x
  2. Step 2: Convert to fraction form
    12,486/27,420 = 27,420/x
  3. Step 3: Cross multiply
    12,486x = 27,420 × 27,420
  4. Step 4: Simplify right side
    12,486x = 751,856,400
  5. Step 5: Solve for x
    x = 751,856,400/12,486
  6. Step 6: Final answer
    x = 60,215.95

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.