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Finding the Third Proportional to 15,144 and 20,874

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Solution

The third proportional to 15,144 and 20,874 is: 28,772.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,144 : 20,874 = 20,874 : x
  2. Step 2: Convert to fraction form
    15,144/20,874 = 20,874/x
  3. Step 3: Cross multiply
    15,144x = 20,874 × 20,874
  4. Step 4: Simplify right side
    15,144x = 435,723,876
  5. Step 5: Solve for x
    x = 435,723,876/15,144
  6. Step 6: Final answer
    x = 28,772.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.