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Finding the Fourth Proportional to 18,834.92, 28,249.80 and 13,195.52

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Solution

The fourth proportional to 18,834.92, 28,249.80 and 13,195.52 is: 19,791.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,834.92 : 28,249.80 = 13,195.52 : x
  2. Step 2: Convert to fraction form
    18,834.92/28,249.80 = 13,195.52/x
  3. Step 3: Cross multiply
    18,834.92x = 28,249.80 × 13,195.52
  4. Step 4: Simplify right side
    18,834.92x = 372,770,800.90
  5. Step 5: Solve for x
    x = 372,770,800.90/18,834.92
  6. Step 6: Final answer
    x = 19,791.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.