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Finding the Third Proportional to 6,917.91 and 15,217.88

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Solution

The third proportional to 6,917.91 and 15,217.88 is: 33,475.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,917.91 : 15,217.88 = 15,217.88 : x
  2. Step 2: Convert to fraction form
    6,917.91/15,217.88 = 15,217.88/x
  3. Step 3: Cross multiply
    6,917.91x = 15,217.88 × 15,217.88
  4. Step 4: Simplify right side
    6,917.91x = 231,583,719.52
  5. Step 5: Solve for x
    x = 231,583,719.52/6,917.91
  6. Step 6: Final answer
    x = 33,475.98

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.