Home / 11,102.81-16,660.78-4,087.75

Finding the Fourth Proportional to 11,102.81, 16,660.78 and 4,087.75

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Solution

The fourth proportional to 11,102.81, 16,660.78 and 4,087.75 is: 6,134.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,102.81 : 16,660.78 = 4,087.75 : x
  2. Step 2: Convert to fraction form
    11,102.81/16,660.78 = 4,087.75/x
  3. Step 3: Cross multiply
    11,102.81x = 16,660.78 × 4,087.75
  4. Step 4: Simplify right side
    11,102.81x = 68,105,103.45
  5. Step 5: Solve for x
    x = 68,105,103.45/11,102.81
  6. Step 6: Final answer
    x = 6,134.04

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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.