Home / 13,540.80-20,300.40-5,743.20

Finding the Fourth Proportional to 13,540.80, 20,300.40 and 5,743.20

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Solution

The fourth proportional to 13,540.80, 20,300.40 and 5,743.20 is: 8,610.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,540.80 : 20,300.40 = 5,743.20 : x
  2. Step 2: Convert to fraction form
    13,540.80/20,300.40 = 5,743.20/x
  3. Step 3: Cross multiply
    13,540.80x = 20,300.40 × 5,743.20
  4. Step 4: Simplify right side
    13,540.80x = 116,589,257.28
  5. Step 5: Solve for x
    x = 116,589,257.28/13,540.80
  6. Step 6: Final answer
    x = 8,610.22

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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.