Home / 20,131.75-30,198.03-6,280.75

Finding the Fourth Proportional to 20,131.75, 30,198.03 and 6,280.75

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Solution

The fourth proportional to 20,131.75, 30,198.03 and 6,280.75 is: 9,421.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.75 : 30,198.03 = 6,280.75 : x
  2. Step 2: Convert to fraction form
    20,131.75/30,198.03 = 6,280.75/x
  3. Step 3: Cross multiply
    20,131.75x = 30,198.03 × 6,280.75
  4. Step 4: Simplify right side
    20,131.75x = 189,666,276.92
  5. Step 5: Solve for x
    x = 189,666,276.92/20,131.75
  6. Step 6: Final answer
    x = 9,421.25

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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.