Home / 28,913.26-43,371.38-8,138.38

Finding the Fourth Proportional to 28,913.26, 43,371.38 and 8,138.38

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Solution

The fourth proportional to 28,913.26, 43,371.38 and 8,138.38 is: 12,207.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,913.26 : 43,371.38 = 8,138.38 : x
  2. Step 2: Convert to fraction form
    28,913.26/43,371.38 = 8,138.38/x
  3. Step 3: Cross multiply
    28,913.26x = 43,371.38 × 8,138.38
  4. Step 4: Simplify right side
    28,913.26x = 352,972,771.56
  5. Step 5: Solve for x
    x = 352,972,771.56/28,913.26
  6. Step 6: Final answer
    x = 12,207.99

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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.