Home / 31,665.44-43,679.27-20,910.42

Finding the Fourth Proportional to 31,665.44, 43,679.27 and 20,910.42

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Solution

The fourth proportional to 31,665.44, 43,679.27 and 20,910.42 is: 28,843.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,665.44 : 43,679.27 = 20,910.42 : x
  2. Step 2: Convert to fraction form
    31,665.44/43,679.27 = 20,910.42/x
  3. Step 3: Cross multiply
    31,665.44x = 43,679.27 × 20,910.42
  4. Step 4: Simplify right side
    31,665.44x = 913,351,933.27
  5. Step 5: Solve for x
    x = 913,351,933.27/31,665.44
  6. Step 6: Final answer
    x = 28,843.81

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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.