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Finding the Third Proportional to 18,436 and 28,375

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Solution

The third proportional to 18,436 and 28,375 is: 43,672.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,436 : 28,375 = 28,375 : x
  2. Step 2: Convert to fraction form
    18,436/28,375 = 28,375/x
  3. Step 3: Cross multiply
    18,436x = 28,375 × 28,375
  4. Step 4: Simplify right side
    18,436x = 805,140,625
  5. Step 5: Solve for x
    x = 805,140,625/18,436
  6. Step 6: Final answer
    x = 43,672.20

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.