Home / 11,205.78-16,808.76-3,811.92

Finding the Fourth Proportional to 11,205.78, 16,808.76 and 3,811.92

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Solution

The fourth proportional to 11,205.78, 16,808.76 and 3,811.92 is: 5,717.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,205.78 : 16,808.76 = 3,811.92 : x
  2. Step 2: Convert to fraction form
    11,205.78/16,808.76 = 3,811.92/x
  3. Step 3: Cross multiply
    11,205.78x = 16,808.76 × 3,811.92
  4. Step 4: Simplify right side
    11,205.78x = 64,073,648.42
  5. Step 5: Solve for x
    x = 64,073,648.42/11,205.78
  6. Step 6: Final answer
    x = 5,717.91

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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.