Home / 12,489.38-18,719.94-5,084.54

Finding the Fourth Proportional to 12,489.38, 18,719.94 and 5,084.54

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Solution

The fourth proportional to 12,489.38, 18,719.94 and 5,084.54 is: 7,621.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,489.38 : 18,719.94 = 5,084.54 : x
  2. Step 2: Convert to fraction form
    12,489.38/18,719.94 = 5,084.54/x
  3. Step 3: Cross multiply
    12,489.38x = 18,719.94 × 5,084.54
  4. Step 4: Simplify right side
    12,489.38x = 95,182,283.73
  5. Step 5: Solve for x
    x = 95,182,283.73/12,489.38
  6. Step 6: Final answer
    x = 7,621.06

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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.