Home / 13,540.23-20,310.26-3,679.47

Finding the Fourth Proportional to 13,540.23, 20,310.26 and 3,679.47

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Solution

The fourth proportional to 13,540.23, 20,310.26 and 3,679.47 is: 5,519.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,540.23 : 20,310.26 = 3,679.47 : x
  2. Step 2: Convert to fraction form
    13,540.23/20,310.26 = 3,679.47/x
  3. Step 3: Cross multiply
    13,540.23x = 20,310.26 × 3,679.47
  4. Step 4: Simplify right side
    13,540.23x = 74,730,973.96
  5. Step 5: Solve for x
    x = 74,730,973.96/13,540.23
  6. Step 6: Final answer
    x = 5,519.18

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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.