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Finding the Third Proportional to 11,412 and 18,326

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Solution

The third proportional to 11,412 and 18,326 is: 29,428.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,412 : 18,326 = 18,326 : x
  2. Step 2: Convert to fraction form
    11,412/18,326 = 18,326/x
  3. Step 3: Cross multiply
    11,412x = 18,326 × 18,326
  4. Step 4: Simplify right side
    11,412x = 335,842,276
  5. Step 5: Solve for x
    x = 335,842,276/11,412
  6. Step 6: Final answer
    x = 29,428.87

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.