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Finding the Third Proportional to 12,129 and 26,171

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Solution

The third proportional to 12,129 and 26,171 is: 56,469.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,129 : 26,171 = 26,171 : x
  2. Step 2: Convert to fraction form
    12,129/26,171 = 26,171/x
  3. Step 3: Cross multiply
    12,129x = 26,171 × 26,171
  4. Step 4: Simplify right side
    12,129x = 684,921,241
  5. Step 5: Solve for x
    x = 684,921,241/12,129
  6. Step 6: Final answer
    x = 56,469.72

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.