Home / 28,914.26-43,372.90-8,139.38

Finding the Fourth Proportional to 28,914.26, 43,372.90 and 8,139.38

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Solution

The fourth proportional to 28,914.26, 43,372.90 and 8,139.38 is: 12,209.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,914.26 : 43,372.90 = 8,139.38 : x
  2. Step 2: Convert to fraction form
    28,914.26/43,372.90 = 8,139.38/x
  3. Step 3: Cross multiply
    28,914.26x = 43,372.90 × 8,139.38
  4. Step 4: Simplify right side
    28,914.26x = 353,028,514.80
  5. Step 5: Solve for x
    x = 353,028,514.80/28,914.26
  6. Step 6: Final answer
    x = 12,209.50

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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.