Home / 31,380.62-43,311.39-19,449.26

Finding the Fourth Proportional to 31,380.62, 43,311.39 and 19,449.26

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Solution

The fourth proportional to 31,380.62, 43,311.39 and 19,449.26 is: 26,843.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,380.62 : 43,311.39 = 19,449.26 : x
  2. Step 2: Convert to fraction form
    31,380.62/43,311.39 = 19,449.26/x
  3. Step 3: Cross multiply
    31,380.62x = 43,311.39 × 19,449.26
  4. Step 4: Simplify right side
    31,380.62x = 842,374,485.07
  5. Step 5: Solve for x
    x = 842,374,485.07/31,380.62
  6. Step 6: Final answer
    x = 26,843.78

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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.