Home / 31,276.80-43,163.91-17,129.61

Finding the Fourth Proportional to 31,276.80, 43,163.91 and 17,129.61

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Solution

The fourth proportional to 31,276.80, 43,163.91 and 17,129.61 is: 23,639.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,276.80 : 43,163.91 = 17,129.61 : x
  2. Step 2: Convert to fraction form
    31,276.80/43,163.91 = 17,129.61/x
  3. Step 3: Cross multiply
    31,276.80x = 43,163.91 × 17,129.61
  4. Step 4: Simplify right side
    31,276.80x = 739,380,944.38
  5. Step 5: Solve for x
    x = 739,380,944.38/31,276.80
  6. Step 6: Final answer
    x = 23,639.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.