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Finding the Third Proportional to 13,491 and 20,259

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Solution

The third proportional to 13,491 and 20,259 is: 30,422.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,491 : 20,259 = 20,259 : x
  2. Step 2: Convert to fraction form
    13,491/20,259 = 20,259/x
  3. Step 3: Cross multiply
    13,491x = 20,259 × 20,259
  4. Step 4: Simplify right side
    13,491x = 410,427,081
  5. Step 5: Solve for x
    x = 410,427,081/13,491
  6. Step 6: Final answer
    x = 30,422.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.