Home / 31,128.92-42,958.44-16,982.24

Finding the Fourth Proportional to 31,128.92, 42,958.44 and 16,982.24

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Solution

The fourth proportional to 31,128.92, 42,958.44 and 16,982.24 is: 23,435.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,128.92 : 42,958.44 = 16,982.24 : x
  2. Step 2: Convert to fraction form
    31,128.92/42,958.44 = 16,982.24/x
  3. Step 3: Cross multiply
    31,128.92x = 42,958.44 × 16,982.24
  4. Step 4: Simplify right side
    31,128.92x = 729,530,538.11
  5. Step 5: Solve for x
    x = 729,530,538.11/31,128.92
  6. Step 6: Final answer
    x = 23,435.78

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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.