Home / 13,540.24-20,296.92-7,684.72

Finding the Fourth Proportional to 13,540.24, 20,296.92 and 7,684.72

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Solution

The fourth proportional to 13,540.24, 20,296.92 and 7,684.72 is: 11,519.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,540.24 : 20,296.92 = 7,684.72 : x
  2. Step 2: Convert to fraction form
    13,540.24/20,296.92 = 7,684.72/x
  3. Step 3: Cross multiply
    13,540.24x = 20,296.92 × 7,684.72
  4. Step 4: Simplify right side
    13,540.24x = 155,976,147.06
  5. Step 5: Solve for x
    x = 155,976,147.06/13,540.24
  6. Step 6: Final answer
    x = 11,519.45

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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.