Home / 20,131.66-30,198.99-5,340.25

Finding the Fourth Proportional to 20,131.66, 30,198.99 and 5,340.25

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Solution

The fourth proportional to 20,131.66, 30,198.99 and 5,340.25 is: 8,010.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.66 : 30,198.99 = 5,340.25 : x
  2. Step 2: Convert to fraction form
    20,131.66/30,198.99 = 5,340.25/x
  3. Step 3: Cross multiply
    20,131.66x = 30,198.99 × 5,340.25
  4. Step 4: Simplify right side
    20,131.66x = 161,270,156.35
  5. Step 5: Solve for x
    x = 161,270,156.35/20,131.66
  6. Step 6: Final answer
    x = 8,010.77

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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.