Home / 13,934.72-20,891.88-5,169.68

Finding the Fourth Proportional to 13,934.72, 20,891.88 and 5,169.68

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Solution

The fourth proportional to 13,934.72, 20,891.88 and 5,169.68 is: 7,750.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,934.72 : 20,891.88 = 5,169.68 : x
  2. Step 2: Convert to fraction form
    13,934.72/20,891.88 = 5,169.68/x
  3. Step 3: Cross multiply
    13,934.72x = 20,891.88 × 5,169.68
  4. Step 4: Simplify right side
    13,934.72x = 108,004,334.20
  5. Step 5: Solve for x
    x = 108,004,334.20/13,934.72
  6. Step 6: Final answer
    x = 7,750.74

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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.