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Finding the Third Proportional to 12,989.11 and 28,252.55

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Solution

The third proportional to 12,989.11 and 28,252.55 is: 61,451.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,989.11 : 28,252.55 = 28,252.55 : x
  2. Step 2: Convert to fraction form
    12,989.11/28,252.55 = 28,252.55/x
  3. Step 3: Cross multiply
    12,989.11x = 28,252.55 × 28,252.55
  4. Step 4: Simplify right side
    12,989.11x = 798,206,404.92
  5. Step 5: Solve for x
    x = 798,206,404.92/12,989.11
  6. Step 6: Final answer
    x = 61,451.97

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.