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Finding the Fourth Proportional to 33,455.70, 50,149.80 and 12,382.20

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Solution

The fourth proportional to 33,455.70, 50,149.80 and 12,382.20 is: 18,560.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,455.70 : 50,149.80 = 12,382.20 : x
  2. Step 2: Convert to fraction form
    33,455.70/50,149.80 = 12,382.20/x
  3. Step 3: Cross multiply
    33,455.70x = 50,149.80 × 12,382.20
  4. Step 4: Simplify right side
    33,455.70x = 620,964,853.56
  5. Step 5: Solve for x
    x = 620,964,853.56/33,455.70
  6. Step 6: Final answer
    x = 18,560.81

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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.