Home / 20,974.28-31,466.87-7,826.75

Finding the Fourth Proportional to 20,974.28, 31,466.87 and 7,826.75

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Solution

The fourth proportional to 20,974.28, 31,466.87 and 7,826.75 is: 11,742.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,974.28 : 31,466.87 = 7,826.75 : x
  2. Step 2: Convert to fraction form
    20,974.28/31,466.87 = 7,826.75/x
  3. Step 3: Cross multiply
    20,974.28x = 31,466.87 × 7,826.75
  4. Step 4: Simplify right side
    20,974.28x = 246,283,324.77
  5. Step 5: Solve for x
    x = 246,283,324.77/20,974.28
  6. Step 6: Final answer
    x = 11,742.16

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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.