Home / 28,257.75-42,387.44-7,481.25

Finding the Fourth Proportional to 28,257.75, 42,387.44 and 7,481.25

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Solution

The fourth proportional to 28,257.75, 42,387.44 and 7,481.25 is: 11,222.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,257.75 : 42,387.44 = 7,481.25 : x
  2. Step 2: Convert to fraction form
    28,257.75/42,387.44 = 7,481.25/x
  3. Step 3: Cross multiply
    28,257.75x = 42,387.44 × 7,481.25
  4. Step 4: Simplify right side
    28,257.75x = 317,110,998.09
  5. Step 5: Solve for x
    x = 317,110,998.09/28,257.75
  6. Step 6: Final answer
    x = 11,222.09

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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.