Home / 11,914.76-17,872.28-4,121.75

Finding the Fourth Proportional to 11,914.76, 17,872.28 and 4,121.75

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Solution

The fourth proportional to 11,914.76, 17,872.28 and 4,121.75 is: 6,182.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,914.76 : 17,872.28 = 4,121.75 : x
  2. Step 2: Convert to fraction form
    11,914.76/17,872.28 = 4,121.75/x
  3. Step 3: Cross multiply
    11,914.76x = 17,872.28 × 4,121.75
  4. Step 4: Simplify right side
    11,914.76x = 73,665,070.09
  5. Step 5: Solve for x
    x = 73,665,070.09/11,914.76
  6. Step 6: Final answer
    x = 6,182.67

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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.