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Finding the Third Proportional to 8,488.13 and 12,620.81

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Solution

The third proportional to 8,488.13 and 12,620.81 is: 18,765.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,488.13 : 12,620.81 = 12,620.81 : x
  2. Step 2: Convert to fraction form
    8,488.13/12,620.81 = 12,620.81/x
  3. Step 3: Cross multiply
    8,488.13x = 12,620.81 × 12,620.81
  4. Step 4: Simplify right side
    8,488.13x = 159,284,908.16
  5. Step 5: Solve for x
    x = 159,284,908.16/8,488.13
  6. Step 6: Final answer
    x = 18,765.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.