Home / 11,091.28-16,639.32-5,163.76

Finding the Fourth Proportional to 11,091.28, 16,639.32 and 5,163.76

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Solution

The fourth proportional to 11,091.28, 16,639.32 and 5,163.76 is: 7,746.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,091.28 : 16,639.32 = 5,163.76 : x
  2. Step 2: Convert to fraction form
    11,091.28/16,639.32 = 5,163.76/x
  3. Step 3: Cross multiply
    11,091.28x = 16,639.32 × 5,163.76
  4. Step 4: Simplify right side
    11,091.28x = 85,921,455.04
  5. Step 5: Solve for x
    x = 85,921,455.04/11,091.28
  6. Step 6: Final answer
    x = 7,746.76

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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.