Home / 11,286.20-16,930.07-3,388.40

Finding the Fourth Proportional to 11,286.20, 16,930.07 and 3,388.40

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Solution

The fourth proportional to 11,286.20, 16,930.07 and 3,388.40 is: 5,082.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,286.20 : 16,930.07 = 3,388.40 : x
  2. Step 2: Convert to fraction form
    11,286.20/16,930.07 = 3,388.40/x
  3. Step 3: Cross multiply
    11,286.20x = 16,930.07 × 3,388.40
  4. Step 4: Simplify right side
    11,286.20x = 57,365,813.68
  5. Step 5: Solve for x
    x = 57,365,813.68/11,286.20
  6. Step 6: Final answer
    x = 5,082.83

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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.