Home / 11,121.38-16,680.83-2,801.40

Finding the Fourth Proportional to 11,121.38, 16,680.83 and 2,801.40

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Solution

The fourth proportional to 11,121.38, 16,680.83 and 2,801.40 is: 4,201.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.38 : 16,680.83 = 2,801.40 : x
  2. Step 2: Convert to fraction form
    11,121.38/16,680.83 = 2,801.40/x
  3. Step 3: Cross multiply
    11,121.38x = 16,680.83 × 2,801.40
  4. Step 4: Simplify right side
    11,121.38x = 46,729,663.16
  5. Step 5: Solve for x
    x = 46,729,663.16/11,121.38
  6. Step 6: Final answer
    x = 4,201.79

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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.