Home / 28,905.68-43,358.52-8,129.18

Finding the Fourth Proportional to 28,905.68, 43,358.52 and 8,129.18

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Solution

The fourth proportional to 28,905.68, 43,358.52 and 8,129.18 is: 12,193.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,905.68 : 43,358.52 = 8,129.18 : x
  2. Step 2: Convert to fraction form
    28,905.68/43,358.52 = 8,129.18/x
  3. Step 3: Cross multiply
    28,905.68x = 43,358.52 × 8,129.18
  4. Step 4: Simplify right side
    28,905.68x = 352,469,213.61
  5. Step 5: Solve for x
    x = 352,469,213.61/28,905.68
  6. Step 6: Final answer
    x = 12,193.77

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Similar ratio
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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.