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Finding the Third Proportional to 18,211.31 and 28,125.56

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Solution

The third proportional to 18,211.31 and 28,125.56 is: 43,437.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,211.31 : 28,125.56 = 28,125.56 : x
  2. Step 2: Convert to fraction form
    18,211.31/28,125.56 = 28,125.56/x
  3. Step 3: Cross multiply
    18,211.31x = 28,125.56 × 28,125.56
  4. Step 4: Simplify right side
    18,211.31x = 791,047,265.94
  5. Step 5: Solve for x
    x = 791,047,265.94/18,211.31
  6. Step 6: Final answer
    x = 43,437.14

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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.