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Finding the Fourth Proportional to 18,899.48, 28,324.56 and 7,793.48

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Solution

The fourth proportional to 18,899.48, 28,324.56 and 7,793.48 is: 11,680.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,899.48 : 28,324.56 = 7,793.48 : x
  2. Step 2: Convert to fraction form
    18,899.48/28,324.56 = 7,793.48/x
  3. Step 3: Cross multiply
    18,899.48x = 28,324.56 × 7,793.48
  4. Step 4: Simplify right side
    18,899.48x = 220,746,891.87
  5. Step 5: Solve for x
    x = 220,746,891.87/18,899.48
  6. Step 6: Final answer
    x = 11,680.05

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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.