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Finding the Third Proportional to 12,399 and 27,255

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Solution

The third proportional to 12,399 and 27,255 is: 59,910.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,399 : 27,255 = 27,255 : x
  2. Step 2: Convert to fraction form
    12,399/27,255 = 27,255/x
  3. Step 3: Cross multiply
    12,399x = 27,255 × 27,255
  4. Step 4: Simplify right side
    12,399x = 742,835,025
  5. Step 5: Solve for x
    x = 742,835,025/12,399
  6. Step 6: Final answer
    x = 59,910.88

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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.