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Finding the Fourth Proportional to 10,939.91, 16,409.05 and 4,367.57

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Solution

The fourth proportional to 10,939.91, 16,409.05 and 4,367.57 is: 6,551.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,939.91 : 16,409.05 = 4,367.57 : x
  2. Step 2: Convert to fraction form
    10,939.91/16,409.05 = 4,367.57/x
  3. Step 3: Cross multiply
    10,939.91x = 16,409.05 × 4,367.57
  4. Step 4: Simplify right side
    10,939.91x = 71,667,581.54
  5. Step 5: Solve for x
    x = 71,667,581.54/10,939.91
  6. Step 6: Final answer
    x = 6,551.02

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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.