Home / 13,163.28-19,660.86-11,911.94

Finding the Fourth Proportional to 13,163.28, 19,660.86 and 11,911.94

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Solution

The fourth proportional to 13,163.28, 19,660.86 and 11,911.94 is: 17,791.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,163.28 : 19,660.86 = 11,911.94 : x
  2. Step 2: Convert to fraction form
    13,163.28/19,660.86 = 11,911.94/x
  3. Step 3: Cross multiply
    13,163.28x = 19,660.86 × 11,911.94
  4. Step 4: Simplify right side
    13,163.28x = 234,198,826.80
  5. Step 5: Solve for x
    x = 234,198,826.80/13,163.28
  6. Step 6: Final answer
    x = 17,791.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.