Home / 31,858.92-43,961.94-18,428.04

Finding the Fourth Proportional to 31,858.92, 43,961.94 and 18,428.04

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Solution

The fourth proportional to 31,858.92, 43,961.94 and 18,428.04 is: 25,428.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,858.92 : 43,961.94 = 18,428.04 : x
  2. Step 2: Convert to fraction form
    31,858.92/43,961.94 = 18,428.04/x
  3. Step 3: Cross multiply
    31,858.92x = 43,961.94 × 18,428.04
  4. Step 4: Simplify right side
    31,858.92x = 810,132,388.80
  5. Step 5: Solve for x
    x = 810,132,388.80/31,858.92
  6. Step 6: Final answer
    x = 25,428.75

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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.