Home / 31,660.59-43,687.82-18,236.21

Finding the Fourth Proportional to 31,660.59, 43,687.82 and 18,236.21

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Solution

The fourth proportional to 31,660.59, 43,687.82 and 18,236.21 is: 25,163.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,660.59 : 43,687.82 = 18,236.21 : x
  2. Step 2: Convert to fraction form
    31,660.59/43,687.82 = 18,236.21/x
  3. Step 3: Cross multiply
    31,660.59x = 43,687.82 × 18,236.21
  4. Step 4: Simplify right side
    31,660.59x = 796,700,332.86
  5. Step 5: Solve for x
    x = 796,700,332.86/31,660.59
  6. Step 6: Final answer
    x = 25,163.78

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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.