Home / 30,131.52-41,571.84-18,198.40

Finding the Fourth Proportional to 30,131.52, 41,571.84 and 18,198.40

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Solution

The fourth proportional to 30,131.52, 41,571.84 and 18,198.40 is: 25,107.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,131.52 : 41,571.84 = 18,198.40 : x
  2. Step 2: Convert to fraction form
    30,131.52/41,571.84 = 18,198.40/x
  3. Step 3: Cross multiply
    30,131.52x = 41,571.84 × 18,198.40
  4. Step 4: Simplify right side
    30,131.52x = 756,540,973.06
  5. Step 5: Solve for x
    x = 756,540,973.06/30,131.52
  6. Step 6: Final answer
    x = 25,107.96

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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.