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Finding the Fourth Proportional to 32,791.88, 45,245.84 and 20,850.86

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Solution

The fourth proportional to 32,791.88, 45,245.84 and 20,850.86 is: 28,769.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,791.88 : 45,245.84 = 20,850.86 : x
  2. Step 2: Convert to fraction form
    32,791.88/45,245.84 = 20,850.86/x
  3. Step 3: Cross multiply
    32,791.88x = 45,245.84 × 20,850.86
  4. Step 4: Simplify right side
    32,791.88x = 943,414,675.42
  5. Step 5: Solve for x
    x = 943,414,675.42/32,791.88
  6. Step 6: Final answer
    x = 28,769.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.