Home / 11,921.14-17,882.52-3,155.77

Finding the Fourth Proportional to 11,921.14, 17,882.52 and 3,155.77

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Solution

The fourth proportional to 11,921.14, 17,882.52 and 3,155.77 is: 4,733.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.14 : 17,882.52 = 3,155.77 : x
  2. Step 2: Convert to fraction form
    11,921.14/17,882.52 = 3,155.77/x
  3. Step 3: Cross multiply
    11,921.14x = 17,882.52 × 3,155.77
  4. Step 4: Simplify right side
    11,921.14x = 56,433,120.14
  5. Step 5: Solve for x
    x = 56,433,120.14/11,921.14
  6. Step 6: Final answer
    x = 4,733.87

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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.