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Finding the Third Proportional to 9,115.88 and 19,918.88

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Solution

The third proportional to 9,115.88 and 19,918.88 is: 43,524.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,115.88 : 19,918.88 = 19,918.88 : x
  2. Step 2: Convert to fraction form
    9,115.88/19,918.88 = 19,918.88/x
  3. Step 3: Cross multiply
    9,115.88x = 19,918.88 × 19,918.88
  4. Step 4: Simplify right side
    9,115.88x = 396,761,581.27
  5. Step 5: Solve for x
    x = 396,761,581.27/9,115.88
  6. Step 6: Final answer
    x = 43,524.25

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.