Home / 20,153.82-30,229.11-12,736.65

Finding the Fourth Proportional to 20,153.82, 30,229.11 and 12,736.65

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Solution

The fourth proportional to 20,153.82, 30,229.11 and 12,736.65 is: 19,103.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,153.82 : 30,229.11 = 12,736.65 : x
  2. Step 2: Convert to fraction form
    20,153.82/30,229.11 = 12,736.65/x
  3. Step 3: Cross multiply
    20,153.82x = 30,229.11 × 12,736.65
  4. Step 4: Simplify right side
    20,153.82x = 385,017,593.88
  5. Step 5: Solve for x
    x = 385,017,593.88/20,153.82
  6. Step 6: Final answer
    x = 19,103.95

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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.