Home / 31,538.43-43,530.62-18,960.75

Finding the Fourth Proportional to 31,538.43, 43,530.62 and 18,960.75

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Solution

The fourth proportional to 31,538.43, 43,530.62 and 18,960.75 is: 26,170.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,538.43 : 43,530.62 = 18,960.75 : x
  2. Step 2: Convert to fraction form
    31,538.43/43,530.62 = 18,960.75/x
  3. Step 3: Cross multiply
    31,538.43x = 43,530.62 × 18,960.75
  4. Step 4: Simplify right side
    31,538.43x = 825,373,108.36
  5. Step 5: Solve for x
    x = 825,373,108.36/31,538.43
  6. Step 6: Final answer
    x = 26,170.39

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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.