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Finding the Third Proportional to 12,686 and 27,028

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Solution

The third proportional to 12,686 and 27,028 is: 57,584.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,686 : 27,028 = 27,028 : x
  2. Step 2: Convert to fraction form
    12,686/27,028 = 27,028/x
  3. Step 3: Cross multiply
    12,686x = 27,028 × 27,028
  4. Step 4: Simplify right side
    12,686x = 730,512,784
  5. Step 5: Solve for x
    x = 730,512,784/12,686
  6. Step 6: Final answer
    x = 57,584.17

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.