Home / 31,550.82-43,540.02-18,122.94

Finding the Fourth Proportional to 31,550.82, 43,540.02 and 18,122.94

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Solution

The fourth proportional to 31,550.82, 43,540.02 and 18,122.94 is: 25,009.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,550.82 : 43,540.02 = 18,122.94 : x
  2. Step 2: Convert to fraction form
    31,550.82/43,540.02 = 18,122.94/x
  3. Step 3: Cross multiply
    31,550.82x = 43,540.02 × 18,122.94
  4. Step 4: Simplify right side
    31,550.82x = 789,073,170.06
  5. Step 5: Solve for x
    x = 789,073,170.06/31,550.82
  6. Step 6: Final answer
    x = 25,009.59

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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.