Home / 13,719.26-20,578.89-5,517.02

Finding the Fourth Proportional to 13,719.26, 20,578.89 and 5,517.02

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Solution

The fourth proportional to 13,719.26, 20,578.89 and 5,517.02 is: 8,275.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.26 : 20,578.89 = 5,517.02 : x
  2. Step 2: Convert to fraction form
    13,719.26/20,578.89 = 5,517.02/x
  3. Step 3: Cross multiply
    13,719.26x = 20,578.89 × 5,517.02
  4. Step 4: Simplify right side
    13,719.26x = 113,534,147.71
  5. Step 5: Solve for x
    x = 113,534,147.71/13,719.26
  6. Step 6: Final answer
    x = 8,275.53

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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.