Home / 13,947.33-20,919.47-4,086.71

Finding the Fourth Proportional to 13,947.33, 20,919.47 and 4,086.71

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Solution

The fourth proportional to 13,947.33, 20,919.47 and 4,086.71 is: 6,129.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,947.33 : 20,919.47 = 4,086.71 : x
  2. Step 2: Convert to fraction form
    13,947.33/20,919.47 = 4,086.71/x
  3. Step 3: Cross multiply
    13,947.33x = 20,919.47 × 4,086.71
  4. Step 4: Simplify right side
    13,947.33x = 85,491,682.21
  5. Step 5: Solve for x
    x = 85,491,682.21/13,947.33
  6. Step 6: Final answer
    x = 6,129.61

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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.