Home / 31,843.44-43,964.37-20,517.48

Finding the Fourth Proportional to 31,843.44, 43,964.37 and 20,517.48

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Solution

The fourth proportional to 31,843.44, 43,964.37 and 20,517.48 is: 28,327.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,843.44 : 43,964.37 = 20,517.48 : x
  2. Step 2: Convert to fraction form
    31,843.44/43,964.37 = 20,517.48/x
  3. Step 3: Cross multiply
    31,843.44x = 43,964.37 × 20,517.48
  4. Step 4: Simplify right side
    31,843.44x = 902,038,082.19
  5. Step 5: Solve for x
    x = 902,038,082.19/31,843.44
  6. Step 6: Final answer
    x = 28,327.28

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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.