Home / 13,949.20-19,249.76-8,286.72

Finding the Fourth Proportional to 13,949.20, 19,249.76 and 8,286.72

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Solution

The fourth proportional to 13,949.20, 19,249.76 and 8,286.72 is: 11,435.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,949.20 : 19,249.76 = 8,286.72 : x
  2. Step 2: Convert to fraction form
    13,949.20/19,249.76 = 8,286.72/x
  3. Step 3: Cross multiply
    13,949.20x = 19,249.76 × 8,286.72
  4. Step 4: Simplify right side
    13,949.20x = 159,517,371.19
  5. Step 5: Solve for x
    x = 159,517,371.19/13,949.20
  6. Step 6: Final answer
    x = 11,435.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.