Home / 28,766.57-43,131.62-12,138.08

Finding the Fourth Proportional to 28,766.57, 43,131.62 and 12,138.08

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Solution

The fourth proportional to 28,766.57, 43,131.62 and 12,138.08 is: 18,199.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,766.57 : 43,131.62 = 12,138.08 : x
  2. Step 2: Convert to fraction form
    28,766.57/43,131.62 = 12,138.08/x
  3. Step 3: Cross multiply
    28,766.57x = 43,131.62 × 12,138.08
  4. Step 4: Simplify right side
    28,766.57x = 523,534,868.78
  5. Step 5: Solve for x
    x = 523,534,868.78/28,766.57
  6. Step 6: Final answer
    x = 18,199.42

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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.