Home / 31,849.07-43,939.46-20,517.71

Finding the Fourth Proportional to 31,849.07, 43,939.46 and 20,517.71

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Solution

The fourth proportional to 31,849.07, 43,939.46 and 20,517.71 is: 28,306.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,849.07 : 43,939.46 = 20,517.71 : x
  2. Step 2: Convert to fraction form
    31,849.07/43,939.46 = 20,517.71/x
  3. Step 3: Cross multiply
    31,849.07x = 43,939.46 × 20,517.71
  4. Step 4: Simplify right side
    31,849.07x = 901,536,929.43
  5. Step 5: Solve for x
    x = 901,536,929.43/31,849.07
  6. Step 6: Final answer
    x = 28,306.54

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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.