Home / 40,111.54-55,351.82-21,958.78

Finding the Fourth Proportional to 40,111.54, 55,351.82 and 21,958.78

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Solution

The fourth proportional to 40,111.54, 55,351.82 and 21,958.78 is: 30,301.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,111.54 : 55,351.82 = 21,958.78 : x
  2. Step 2: Convert to fraction form
    40,111.54/55,351.82 = 21,958.78/x
  3. Step 3: Cross multiply
    40,111.54x = 55,351.82 × 21,958.78
  4. Step 4: Simplify right side
    40,111.54x = 1,215,458,660.92
  5. Step 5: Solve for x
    x = 1,215,458,660.92/40,111.54
  6. Step 6: Final answer
    x = 30,301.97

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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.