Home / 20,267.20-30,400.80-5,475.70

Finding the Fourth Proportional to 20,267.20, 30,400.80 and 5,475.70

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Solution

The fourth proportional to 20,267.20, 30,400.80 and 5,475.70 is: 8,213.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,267.20 : 30,400.80 = 5,475.70 : x
  2. Step 2: Convert to fraction form
    20,267.20/30,400.80 = 5,475.70/x
  3. Step 3: Cross multiply
    20,267.20x = 30,400.80 × 5,475.70
  4. Step 4: Simplify right side
    20,267.20x = 166,465,660.56
  5. Step 5: Solve for x
    x = 166,465,660.56/20,267.20
  6. Step 6: Final answer
    x = 8,213.55

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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.