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Finding the Third Proportional to 8,434.13 and 12,678.19

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Solution

The third proportional to 8,434.13 and 12,678.19 is: 19,057.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,434.13 : 12,678.19 = 12,678.19 : x
  2. Step 2: Convert to fraction form
    8,434.13/12,678.19 = 12,678.19/x
  3. Step 3: Cross multiply
    8,434.13x = 12,678.19 × 12,678.19
  4. Step 4: Simplify right side
    8,434.13x = 160,736,438.29
  5. Step 5: Solve for x
    x = 160,736,438.29/8,434.13
  6. Step 6: Final answer
    x = 19,057.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.