Home / 31,747.65-43,791.93-20,431.95

Finding the Fourth Proportional to 31,747.65, 43,791.93 and 20,431.95

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Solution

The fourth proportional to 31,747.65, 43,791.93 and 20,431.95 is: 28,183.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,747.65 : 43,791.93 = 20,431.95 : x
  2. Step 2: Convert to fraction form
    31,747.65/43,791.93 = 20,431.95/x
  3. Step 3: Cross multiply
    31,747.65x = 43,791.93 × 20,431.95
  4. Step 4: Simplify right side
    31,747.65x = 894,754,524.16
  5. Step 5: Solve for x
    x = 894,754,524.16/31,747.65
  6. Step 6: Final answer
    x = 28,183.33

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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.