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Finding the Third Proportional to 6,987 and 14,217

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Solution

The third proportional to 6,987 and 14,217 is: 28,928.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,987 : 14,217 = 14,217 : x
  2. Step 2: Convert to fraction form
    6,987/14,217 = 14,217/x
  3. Step 3: Cross multiply
    6,987x = 14,217 × 14,217
  4. Step 4: Simplify right side
    6,987x = 202,123,089
  5. Step 5: Solve for x
    x = 202,123,089/6,987
  6. Step 6: Final answer
    x = 28,928.45

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.