Home / 31,809.54-43,882.77-20,474.97

Finding the Fourth Proportional to 31,809.54, 43,882.77 and 20,474.97

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Solution

The fourth proportional to 31,809.54, 43,882.77 and 20,474.97 is: 28,246.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,809.54 : 43,882.77 = 20,474.97 : x
  2. Step 2: Convert to fraction form
    31,809.54/43,882.77 = 20,474.97/x
  3. Step 3: Cross multiply
    31,809.54x = 43,882.77 × 20,474.97
  4. Step 4: Simplify right side
    31,809.54x = 898,498,399.27
  5. Step 5: Solve for x
    x = 898,498,399.27/31,809.54
  6. Step 6: Final answer
    x = 28,246.19

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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.