Home / 20,974.78-31,454.25-6,179.50

Finding the Fourth Proportional to 20,974.78, 31,454.25 and 6,179.50

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Solution

The fourth proportional to 20,974.78, 31,454.25 and 6,179.50 is: 9,266.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,974.78 : 31,454.25 = 6,179.50 : x
  2. Step 2: Convert to fraction form
    20,974.78/31,454.25 = 6,179.50/x
  3. Step 3: Cross multiply
    20,974.78x = 31,454.25 × 6,179.50
  4. Step 4: Simplify right side
    20,974.78x = 194,371,537.88
  5. Step 5: Solve for x
    x = 194,371,537.88/20,974.78
  6. Step 6: Final answer
    x = 9,266.92

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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.