Home / 12,458.87-18,685.11-3,691.73

Finding the Fourth Proportional to 12,458.87, 18,685.11 and 3,691.73

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Solution

The fourth proportional to 12,458.87, 18,685.11 and 3,691.73 is: 5,536.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458.87 : 18,685.11 = 3,691.73 : x
  2. Step 2: Convert to fraction form
    12,458.87/18,685.11 = 3,691.73/x
  3. Step 3: Cross multiply
    12,458.87x = 18,685.11 × 3,691.73
  4. Step 4: Simplify right side
    12,458.87x = 68,980,427.85
  5. Step 5: Solve for x
    x = 68,980,427.85/12,458.87
  6. Step 6: Final answer
    x = 5,536.65

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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.