Home / 28,906.55-43,350.60-9,180.49

Finding the Fourth Proportional to 28,906.55, 43,350.60 and 9,180.49

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Solution

The fourth proportional to 28,906.55, 43,350.60 and 9,180.49 is: 13,767.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,906.55 : 43,350.60 = 9,180.49 : x
  2. Step 2: Convert to fraction form
    28,906.55/43,350.60 = 9,180.49/x
  3. Step 3: Cross multiply
    28,906.55x = 43,350.60 × 9,180.49
  4. Step 4: Simplify right side
    28,906.55x = 397,979,868.05
  5. Step 5: Solve for x
    x = 397,979,868.05/28,906.55
  6. Step 6: Final answer
    x = 13,767.81

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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.