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Finding the Third Proportional to 11,898 and 17,421

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Solution

The third proportional to 11,898 and 17,421 is: 25,507.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,898 : 17,421 = 17,421 : x
  2. Step 2: Convert to fraction form
    11,898/17,421 = 17,421/x
  3. Step 3: Cross multiply
    11,898x = 17,421 × 17,421
  4. Step 4: Simplify right side
    11,898x = 303,491,241
  5. Step 5: Solve for x
    x = 303,491,241/11,898
  6. Step 6: Final answer
    x = 25,507.75

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.