Home / 13,752.38-20,629.66-3,891.72

Finding the Fourth Proportional to 13,752.38, 20,629.66 and 3,891.72

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Solution

The fourth proportional to 13,752.38, 20,629.66 and 3,891.72 is: 5,837.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,752.38 : 20,629.66 = 3,891.72 : x
  2. Step 2: Convert to fraction form
    13,752.38/20,629.66 = 3,891.72/x
  3. Step 3: Cross multiply
    13,752.38x = 20,629.66 × 3,891.72
  4. Step 4: Simplify right side
    13,752.38x = 80,284,860.42
  5. Step 5: Solve for x
    x = 80,284,860.42/13,752.38
  6. Step 6: Final answer
    x = 5,837.89

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1.5x scale

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.