Home / 12,158.28-18,234.99-3,836.88

Finding the Fourth Proportional to 12,158.28, 18,234.99 and 3,836.88

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Solution

The fourth proportional to 12,158.28, 18,234.99 and 3,836.88 is: 5,754.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,158.28 : 18,234.99 = 3,836.88 : x
  2. Step 2: Convert to fraction form
    12,158.28/18,234.99 = 3,836.88/x
  3. Step 3: Cross multiply
    12,158.28x = 18,234.99 × 3,836.88
  4. Step 4: Simplify right side
    12,158.28x = 69,965,468.43
  5. Step 5: Solve for x
    x = 69,965,468.43/12,158.28
  6. Step 6: Final answer
    x = 5,754.55

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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.