Home / 20,136.75-30,198.94-9,601.21

Finding the Fourth Proportional to 20,136.75, 30,198.94 and 9,601.21

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Solution

The fourth proportional to 20,136.75, 30,198.94 and 9,601.21 is: 14,398.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.75 : 30,198.94 = 9,601.21 : x
  2. Step 2: Convert to fraction form
    20,136.75/30,198.94 = 9,601.21/x
  3. Step 3: Cross multiply
    20,136.75x = 30,198.94 × 9,601.21
  4. Step 4: Simplify right side
    20,136.75x = 289,946,378.46
  5. Step 5: Solve for x
    x = 289,946,378.46/20,136.75
  6. Step 6: Final answer
    x = 14,398.87

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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.