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Finding the Third Proportional to 18,660.88 and 27,979.63

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Solution

The third proportional to 18,660.88 and 27,979.63 is: 41,951.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,660.88 : 27,979.63 = 27,979.63 : x
  2. Step 2: Convert to fraction form
    18,660.88/27,979.63 = 27,979.63/x
  3. Step 3: Cross multiply
    18,660.88x = 27,979.63 × 27,979.63
  4. Step 4: Simplify right side
    18,660.88x = 782,859,415.14
  5. Step 5: Solve for x
    x = 782,859,415.14/18,660.88
  6. Step 6: Final answer
    x = 41,951.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.