Home / 28,906.28-43,359.44-8,129.78

Finding the Fourth Proportional to 28,906.28, 43,359.44 and 8,129.78

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Solution

The fourth proportional to 28,906.28, 43,359.44 and 8,129.78 is: 12,194.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,906.28 : 43,359.44 = 8,129.78 : x
  2. Step 2: Convert to fraction form
    28,906.28/43,359.44 = 8,129.78/x
  3. Step 3: Cross multiply
    28,906.28x = 43,359.44 × 8,129.78
  4. Step 4: Simplify right side
    28,906.28x = 352,502,708.12
  5. Step 5: Solve for x
    x = 352,502,708.12/28,906.28
  6. Step 6: Final answer
    x = 12,194.68

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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.