Home / 20,131.80-30,187.92-8,441.88

Finding the Fourth Proportional to 20,131.80, 30,187.92 and 8,441.88

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Solution

The fourth proportional to 20,131.80, 30,187.92 and 8,441.88 is: 12,658.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.80 : 30,187.92 = 8,441.88 : x
  2. Step 2: Convert to fraction form
    20,131.80/30,187.92 = 8,441.88/x
  3. Step 3: Cross multiply
    20,131.80x = 30,187.92 × 8,441.88
  4. Step 4: Simplify right side
    20,131.80x = 254,842,798.09
  5. Step 5: Solve for x
    x = 254,842,798.09/20,131.80
  6. Step 6: Final answer
    x = 12,658.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.