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Finding the Fourth Proportional to 18,790.52, 28,193.62 and 8,255.12

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Solution

The fourth proportional to 18,790.52, 28,193.62 and 8,255.12 is: 12,386.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,790.52 : 28,193.62 = 8,255.12 : x
  2. Step 2: Convert to fraction form
    18,790.52/28,193.62 = 8,255.12/x
  3. Step 3: Cross multiply
    18,790.52x = 28,193.62 × 8,255.12
  4. Step 4: Simplify right side
    18,790.52x = 232,741,716.33
  5. Step 5: Solve for x
    x = 232,741,716.33/18,790.52
  6. Step 6: Final answer
    x = 12,386.12

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1.5x scale

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.