Home / 11,845.68-17,770.68-4,920

Finding the Fourth Proportional to 11,845.68, 17,770.68 and 4,920

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Solution

The fourth proportional to 11,845.68, 17,770.68 and 4,920 is: 7,380.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,845.68 : 17,770.68 = 4,920 : x
  2. Step 2: Convert to fraction form
    11,845.68/17,770.68 = 4,920/x
  3. Step 3: Cross multiply
    11,845.68x = 17,770.68 × 4,920
  4. Step 4: Simplify right side
    11,845.68x = 87,431,745.60
  5. Step 5: Solve for x
    x = 87,431,745.60/11,845.68
  6. Step 6: Final answer
    x = 7,380.90

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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.