Home / 12,154.28-18,231.41-3,835.13

Finding the Fourth Proportional to 12,154.28, 18,231.41 and 3,835.13

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Solution

The fourth proportional to 12,154.28, 18,231.41 and 3,835.13 is: 5,752.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,154.28 : 18,231.41 = 3,835.13 : x
  2. Step 2: Convert to fraction form
    12,154.28/18,231.41 = 3,835.13/x
  3. Step 3: Cross multiply
    12,154.28x = 18,231.41 × 3,835.13
  4. Step 4: Simplify right side
    12,154.28x = 69,919,882.60
  5. Step 5: Solve for x
    x = 69,919,882.60/12,154.28
  6. Step 6: Final answer
    x = 5,752.70

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Similar ratio
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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.