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Finding the Third Proportional to 12,939.75 and 17,961.75

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Solution

The third proportional to 12,939.75 and 17,961.75 is: 24,932.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.75 : 17,961.75 = 17,961.75 : x
  2. Step 2: Convert to fraction form
    12,939.75/17,961.75 = 17,961.75/x
  3. Step 3: Cross multiply
    12,939.75x = 17,961.75 × 17,961.75
  4. Step 4: Simplify right side
    12,939.75x = 322,624,463.06
  5. Step 5: Solve for x
    x = 322,624,463.06/12,939.75
  6. Step 6: Final answer
    x = 24,932.82

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.