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Finding the Third Proportional to 20,655 and 27,681.75

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Solution

The third proportional to 20,655 and 27,681.75 is: 37,098.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655 : 27,681.75 = 27,681.75 : x
  2. Step 2: Convert to fraction form
    20,655/27,681.75 = 27,681.75/x
  3. Step 3: Cross multiply
    20,655x = 27,681.75 × 27,681.75
  4. Step 4: Simplify right side
    20,655x = 766,279,283.06
  5. Step 5: Solve for x
    x = 766,279,283.06/20,655
  6. Step 6: Final answer
    x = 37,098.97

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.