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Finding the Third Proportional to 6,612 and 15,986

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Solution

The third proportional to 6,612 and 15,986 is: 38,649.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,612 : 15,986 = 15,986 : x
  2. Step 2: Convert to fraction form
    6,612/15,986 = 15,986/x
  3. Step 3: Cross multiply
    6,612x = 15,986 × 15,986
  4. Step 4: Simplify right side
    6,612x = 255,552,196
  5. Step 5: Solve for x
    x = 255,552,196/6,612
  6. Step 6: Final answer
    x = 38,649.76

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Why These Related Problems?

These problems maintain the same ratio (2.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.