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Finding the Third Proportional to 8,731.69 and 18,847.13

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Solution

The third proportional to 8,731.69 and 18,847.13 is: 40,681.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,731.69 : 18,847.13 = 18,847.13 : x
  2. Step 2: Convert to fraction form
    8,731.69/18,847.13 = 18,847.13/x
  3. Step 3: Cross multiply
    8,731.69x = 18,847.13 × 18,847.13
  4. Step 4: Simplify right side
    8,731.69x = 355,214,120.77
  5. Step 5: Solve for x
    x = 355,214,120.77/8,731.69
  6. Step 6: Final answer
    x = 40,681.04

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.