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Finding the Third Proportional to 9,988.31 and 20,320.88

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Solution

The third proportional to 9,988.31 and 20,320.88 is: 41,342.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,988.31 : 20,320.88 = 20,320.88 : x
  2. Step 2: Convert to fraction form
    9,988.31/20,320.88 = 20,320.88/x
  3. Step 3: Cross multiply
    9,988.31x = 20,320.88 × 20,320.88
  4. Step 4: Simplify right side
    9,988.31x = 412,937,960.77
  5. Step 5: Solve for x
    x = 412,937,960.77/9,988.31
  6. Step 6: Final answer
    x = 41,342.11

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.