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Finding the Third Proportional to 13,279 and 19,371

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Solution

The third proportional to 13,279 and 19,371 is: 28,257.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279 : 19,371 = 19,371 : x
  2. Step 2: Convert to fraction form
    13,279/19,371 = 19,371/x
  3. Step 3: Cross multiply
    13,279x = 19,371 × 19,371
  4. Step 4: Simplify right side
    13,279x = 375,235,641
  5. Step 5: Solve for x
    x = 375,235,641/13,279
  6. Step 6: Final answer
    x = 28,257.82

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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.