Home / 28,258.38-42,387.84-7,481.88

Finding the Fourth Proportional to 28,258.38, 42,387.84 and 7,481.88

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Solution

The fourth proportional to 28,258.38, 42,387.84 and 7,481.88 is: 11,222.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,258.38 : 42,387.84 = 7,481.88 : x
  2. Step 2: Convert to fraction form
    28,258.38/42,387.84 = 7,481.88/x
  3. Step 3: Cross multiply
    28,258.38x = 42,387.84 × 7,481.88
  4. Step 4: Simplify right side
    28,258.38x = 317,140,732.34
  5. Step 5: Solve for x
    x = 317,140,732.34/28,258.38
  6. Step 6: Final answer
    x = 11,222.89

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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.