Home / 28,785.92-43,170.60-12,149.70

Finding the Fourth Proportional to 28,785.92, 43,170.60 and 12,149.70

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Solution

The fourth proportional to 28,785.92, 43,170.60 and 12,149.70 is: 18,221.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,785.92 : 43,170.60 = 12,149.70 : x
  2. Step 2: Convert to fraction form
    28,785.92/43,170.60 = 12,149.70/x
  3. Step 3: Cross multiply
    28,785.92x = 43,170.60 × 12,149.70
  4. Step 4: Simplify right side
    28,785.92x = 524,509,838.82
  5. Step 5: Solve for x
    x = 524,509,838.82/28,785.92
  6. Step 6: Final answer
    x = 18,221.06

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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.