Home / 31,940.91-44,065.49-21,190.86

Finding the Fourth Proportional to 31,940.91, 44,065.49 and 21,190.86

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Solution

The fourth proportional to 31,940.91, 44,065.49 and 21,190.86 is: 29,234.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,940.91 : 44,065.49 = 21,190.86 : x
  2. Step 2: Convert to fraction form
    31,940.91/44,065.49 = 21,190.86/x
  3. Step 3: Cross multiply
    31,940.91x = 44,065.49 × 21,190.86
  4. Step 4: Simplify right side
    31,940.91x = 933,785,523.47
  5. Step 5: Solve for x
    x = 933,785,523.47/31,940.91
  6. Step 6: Final answer
    x = 29,234.78

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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.