Home / 13,928.43-20,890.24-3,933.87

Finding the Fourth Proportional to 13,928.43, 20,890.24 and 3,933.87

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Solution

The fourth proportional to 13,928.43, 20,890.24 and 3,933.87 is: 5,900.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.43 : 20,890.24 = 3,933.87 : x
  2. Step 2: Convert to fraction form
    13,928.43/20,890.24 = 3,933.87/x
  3. Step 3: Cross multiply
    13,928.43x = 20,890.24 × 3,933.87
  4. Step 4: Simplify right side
    13,928.43x = 82,179,488.43
  5. Step 5: Solve for x
    x = 82,179,488.43/13,928.43
  6. Step 6: Final answer
    x = 5,900.13

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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.