Home / 11,121.40-16,680.66-4,195

Finding the Fourth Proportional to 11,121.40, 16,680.66 and 4,195

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Solution

The fourth proportional to 11,121.40, 16,680.66 and 4,195 is: 6,291.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.40 : 16,680.66 = 4,195 : x
  2. Step 2: Convert to fraction form
    11,121.40/16,680.66 = 4,195/x
  3. Step 3: Cross multiply
    11,121.40x = 16,680.66 × 4,195
  4. Step 4: Simplify right side
    11,121.40x = 69,975,368.70
  5. Step 5: Solve for x
    x = 69,975,368.70/11,121.40
  6. Step 6: Final answer
    x = 6,291.96

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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.