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Finding the Fourth Proportional to 28,473.80, 42,743.10 and 16,793.60

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Solution

The fourth proportional to 28,473.80, 42,743.10 and 16,793.60 is: 25,209.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,473.80 : 42,743.10 = 16,793.60 : x
  2. Step 2: Convert to fraction form
    28,473.80/42,743.10 = 16,793.60/x
  3. Step 3: Cross multiply
    28,473.80x = 42,743.10 × 16,793.60
  4. Step 4: Simplify right side
    28,473.80x = 717,810,524.16
  5. Step 5: Solve for x
    x = 717,810,524.16/28,473.80
  6. Step 6: Final answer
    x = 25,209.51

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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.