Home / 31,251.16-43,112.70-18,668.44

Finding the Fourth Proportional to 31,251.16, 43,112.70 and 18,668.44

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Solution

The fourth proportional to 31,251.16, 43,112.70 and 18,668.44 is: 25,754.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,251.16 : 43,112.70 = 18,668.44 : x
  2. Step 2: Convert to fraction form
    31,251.16/43,112.70 = 18,668.44/x
  3. Step 3: Cross multiply
    31,251.16x = 43,112.70 × 18,668.44
  4. Step 4: Simplify right side
    31,251.16x = 804,846,853.19
  5. Step 5: Solve for x
    x = 804,846,853.19/31,251.16
  6. Step 6: Final answer
    x = 25,754.14

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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.