Home / 28,231.25-42,350.90-9,251.82

Finding the Fourth Proportional to 28,231.25, 42,350.90 and 9,251.82

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Solution

The fourth proportional to 28,231.25, 42,350.90 and 9,251.82 is: 13,879.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,231.25 : 42,350.90 = 9,251.82 : x
  2. Step 2: Convert to fraction form
    28,231.25/42,350.90 = 9,251.82/x
  3. Step 3: Cross multiply
    28,231.25x = 42,350.90 × 9,251.82
  4. Step 4: Simplify right side
    28,231.25x = 391,822,857.38
  5. Step 5: Solve for x
    x = 391,822,857.38/28,231.25
  6. Step 6: Final answer
    x = 13,879.05

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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.