Home / 12,134.82-18,202.20-3,815.56

Finding the Fourth Proportional to 12,134.82, 18,202.20 and 3,815.56

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Solution

The fourth proportional to 12,134.82, 18,202.20 and 3,815.56 is: 5,723.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,134.82 : 18,202.20 = 3,815.56 : x
  2. Step 2: Convert to fraction form
    12,134.82/18,202.20 = 3,815.56/x
  3. Step 3: Cross multiply
    12,134.82x = 18,202.20 × 3,815.56
  4. Step 4: Simplify right side
    12,134.82x = 69,451,586.23
  5. Step 5: Solve for x
    x = 69,451,586.23/12,134.82
  6. Step 6: Final answer
    x = 5,723.33

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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.