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Finding the Third Proportional to 18,481.50 and 28,405.50

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Solution

The third proportional to 18,481.50 and 28,405.50 is: 43,658.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,481.50 : 28,405.50 = 28,405.50 : x
  2. Step 2: Convert to fraction form
    18,481.50/28,405.50 = 28,405.50/x
  3. Step 3: Cross multiply
    18,481.50x = 28,405.50 × 28,405.50
  4. Step 4: Simplify right side
    18,481.50x = 806,872,430.25
  5. Step 5: Solve for x
    x = 806,872,430.25/18,481.50
  6. Step 6: Final answer
    x = 43,658.38

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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.