Home / 31,815.75-43,905.75-17,668.71

Finding the Fourth Proportional to 31,815.75, 43,905.75 and 17,668.71

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Solution

The fourth proportional to 31,815.75, 43,905.75 and 17,668.71 is: 24,382.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,815.75 : 43,905.75 = 17,668.71 : x
  2. Step 2: Convert to fraction form
    31,815.75/43,905.75 = 17,668.71/x
  3. Step 3: Cross multiply
    31,815.75x = 43,905.75 × 17,668.71
  4. Step 4: Simplify right side
    31,815.75x = 775,757,964.08
  5. Step 5: Solve for x
    x = 775,757,964.08/31,815.75
  6. Step 6: Final answer
    x = 24,382.83

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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.