Home / 18,939.96-28,414.50-5,791.44

Finding the Fourth Proportional to 18,939.96, 28,414.50 and 5,791.44

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Solution

The fourth proportional to 18,939.96, 28,414.50 and 5,791.44 is: 8,688.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,939.96 : 28,414.50 = 5,791.44 : x
  2. Step 2: Convert to fraction form
    18,939.96/28,414.50 = 5,791.44/x
  3. Step 3: Cross multiply
    18,939.96x = 28,414.50 × 5,791.44
  4. Step 4: Simplify right side
    18,939.96x = 164,560,871.88
  5. Step 5: Solve for x
    x = 164,560,871.88/18,939.96
  6. Step 6: Final answer
    x = 8,688.55

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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.