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Finding the Third Proportional to 6,642 and 13,930

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Solution

The third proportional to 6,642 and 13,930 is: 29,214.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642 : 13,930 = 13,930 : x
  2. Step 2: Convert to fraction form
    6,642/13,930 = 13,930/x
  3. Step 3: Cross multiply
    6,642x = 13,930 × 13,930
  4. Step 4: Simplify right side
    6,642x = 194,044,900
  5. Step 5: Solve for x
    x = 194,044,900/6,642
  6. Step 6: Final answer
    x = 29,214.83

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.