Home / 12,286.76-18,431.90-3,964.84

Finding the Fourth Proportional to 12,286.76, 18,431.90 and 3,964.84

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Solution

The fourth proportional to 12,286.76, 18,431.90 and 3,964.84 is: 5,947.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,286.76 : 18,431.90 = 3,964.84 : x
  2. Step 2: Convert to fraction form
    12,286.76/18,431.90 = 3,964.84/x
  3. Step 3: Cross multiply
    12,286.76x = 18,431.90 × 3,964.84
  4. Step 4: Simplify right side
    12,286.76x = 73,079,534.40
  5. Step 5: Solve for x
    x = 73,079,534.40/12,286.76
  6. Step 6: Final answer
    x = 5,947.83

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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.