Home / 11,128.50-16,694.64-5,281.92

Finding the Fourth Proportional to 11,128.50, 16,694.64 and 5,281.92

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Solution

The fourth proportional to 11,128.50, 16,694.64 and 5,281.92 is: 7,923.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,128.50 : 16,694.64 = 5,281.92 : x
  2. Step 2: Convert to fraction form
    11,128.50/16,694.64 = 5,281.92/x
  3. Step 3: Cross multiply
    11,128.50x = 16,694.64 × 5,281.92
  4. Step 4: Simplify right side
    11,128.50x = 88,179,752.91
  5. Step 5: Solve for x
    x = 88,179,752.91/11,128.50
  6. Step 6: Final answer
    x = 7,923.78

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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.