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Finding the Third Proportional to 12,771 and 26,190

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Solution

The third proportional to 12,771 and 26,190 is: 53,708.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,771 : 26,190 = 26,190 : x
  2. Step 2: Convert to fraction form
    12,771/26,190 = 26,190/x
  3. Step 3: Cross multiply
    12,771x = 26,190 × 26,190
  4. Step 4: Simplify right side
    12,771x = 685,916,100
  5. Step 5: Solve for x
    x = 685,916,100/12,771
  6. Step 6: Final answer
    x = 53,708.88

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.