Home / 11,515.30-17,269.54-4,939.92

Finding the Fourth Proportional to 11,515.30, 17,269.54 and 4,939.92

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Solution

The fourth proportional to 11,515.30, 17,269.54 and 4,939.92 is: 7,408.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,515.30 : 17,269.54 = 4,939.92 : x
  2. Step 2: Convert to fraction form
    11,515.30/17,269.54 = 4,939.92/x
  3. Step 3: Cross multiply
    11,515.30x = 17,269.54 × 4,939.92
  4. Step 4: Simplify right side
    11,515.30x = 85,310,133.69
  5. Step 5: Solve for x
    x = 85,310,133.69/11,515.30
  6. Step 6: Final answer
    x = 7,408.42

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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.