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Finding the Third Proportional to 12,768.75 and 17,877

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Solution

The third proportional to 12,768.75 and 17,877 is: 25,028.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,768.75 : 17,877 = 17,877 : x
  2. Step 2: Convert to fraction form
    12,768.75/17,877 = 17,877/x
  3. Step 3: Cross multiply
    12,768.75x = 17,877 × 17,877
  4. Step 4: Simplify right side
    12,768.75x = 319,587,129
  5. Step 5: Solve for x
    x = 319,587,129/12,768.75
  6. Step 6: Final answer
    x = 25,028.85

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.