Home / 18,691.14-28,031.93-5,540.44

Finding the Fourth Proportional to 18,691.14, 28,031.93 and 5,540.44

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Solution

The fourth proportional to 18,691.14, 28,031.93 and 5,540.44 is: 8,309.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,691.14 : 28,031.93 = 5,540.44 : x
  2. Step 2: Convert to fraction form
    18,691.14/28,031.93 = 5,540.44/x
  3. Step 3: Cross multiply
    18,691.14x = 28,031.93 × 5,540.44
  4. Step 4: Simplify right side
    18,691.14x = 155,309,226.25
  5. Step 5: Solve for x
    x = 155,309,226.25/18,691.14
  6. Step 6: Final answer
    x = 8,309.24

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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.