Home / 13,813.29-20,716.92-3,949.92

Finding the Fourth Proportional to 13,813.29, 20,716.92 and 3,949.92

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Solution

The fourth proportional to 13,813.29, 20,716.92 and 3,949.92 is: 5,924.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,813.29 : 20,716.92 = 3,949.92 : x
  2. Step 2: Convert to fraction form
    13,813.29/20,716.92 = 3,949.92/x
  3. Step 3: Cross multiply
    13,813.29x = 20,716.92 × 3,949.92
  4. Step 4: Simplify right side
    13,813.29x = 81,830,176.65
  5. Step 5: Solve for x
    x = 81,830,176.65/13,813.29
  6. Step 6: Final answer
    x = 5,924.02

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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.