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Finding the Third Proportional to 8,387.75 and 17,139.75

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Solution

The third proportional to 8,387.75 and 17,139.75 is: 35,023.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,387.75 : 17,139.75 = 17,139.75 : x
  2. Step 2: Convert to fraction form
    8,387.75/17,139.75 = 17,139.75/x
  3. Step 3: Cross multiply
    8,387.75x = 17,139.75 × 17,139.75
  4. Step 4: Simplify right side
    8,387.75x = 293,771,030.06
  5. Step 5: Solve for x
    x = 293,771,030.06/8,387.75
  6. Step 6: Final answer
    x = 35,023.82

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.