Home / 11,115.11-16,661.72-5,275.82

Finding the Fourth Proportional to 11,115.11, 16,661.72 and 5,275.82

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Solution

The fourth proportional to 11,115.11, 16,661.72 and 5,275.82 is: 7,908.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,115.11 : 16,661.72 = 5,275.82 : x
  2. Step 2: Convert to fraction form
    11,115.11/16,661.72 = 5,275.82/x
  3. Step 3: Cross multiply
    11,115.11x = 16,661.72 × 5,275.82
  4. Step 4: Simplify right side
    11,115.11x = 87,904,125.92
  5. Step 5: Solve for x
    x = 87,904,125.92/11,115.11
  6. Step 6: Final answer
    x = 7,908.53

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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.