Home / 31,558.41-43,540.44-20,950.09

Finding the Fourth Proportional to 31,558.41, 43,540.44 and 20,950.09

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Solution

The fourth proportional to 31,558.41, 43,540.44 and 20,950.09 is: 28,904.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,558.41 : 43,540.44 = 20,950.09 : x
  2. Step 2: Convert to fraction form
    31,558.41/43,540.44 = 20,950.09/x
  3. Step 3: Cross multiply
    31,558.41x = 43,540.44 × 20,950.09
  4. Step 4: Simplify right side
    31,558.41x = 912,176,194.14
  5. Step 5: Solve for x
    x = 912,176,194.14/31,558.41
  6. Step 6: Final answer
    x = 28,904.38

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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.