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Finding the Third Proportional to 18,657.75 and 28,890.75

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Solution

The third proportional to 18,657.75 and 28,890.75 is: 44,736.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,657.75 : 28,890.75 = 28,890.75 : x
  2. Step 2: Convert to fraction form
    18,657.75/28,890.75 = 28,890.75/x
  3. Step 3: Cross multiply
    18,657.75x = 28,890.75 × 28,890.75
  4. Step 4: Simplify right side
    18,657.75x = 834,675,435.56
  5. Step 5: Solve for x
    x = 834,675,435.56/18,657.75
  6. Step 6: Final answer
    x = 44,736.12

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.