Home / 20,197.78-30,269.94-15,499.83

Finding the Fourth Proportional to 20,197.78, 30,269.94 and 15,499.83

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Solution

The fourth proportional to 20,197.78, 30,269.94 and 15,499.83 is: 23,229.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,197.78 : 30,269.94 = 15,499.83 : x
  2. Step 2: Convert to fraction form
    20,197.78/30,269.94 = 15,499.83/x
  3. Step 3: Cross multiply
    20,197.78x = 30,269.94 × 15,499.83
  4. Step 4: Simplify right side
    20,197.78x = 469,178,979.50
  5. Step 5: Solve for x
    x = 469,178,979.50/20,197.78
  6. Step 6: Final answer
    x = 23,229.24

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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.