Home / 18,213.68-25,136.76-11,144.80

Finding the Fourth Proportional to 18,213.68, 25,136.76 and 11,144.80

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Solution

The fourth proportional to 18,213.68, 25,136.76 and 11,144.80 is: 15,380.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,213.68 : 25,136.76 = 11,144.80 : x
  2. Step 2: Convert to fraction form
    18,213.68/25,136.76 = 11,144.80/x
  3. Step 3: Cross multiply
    18,213.68x = 25,136.76 × 11,144.80
  4. Step 4: Simplify right side
    18,213.68x = 280,144,162.85
  5. Step 5: Solve for x
    x = 280,144,162.85/18,213.68
  6. Step 6: Final answer
    x = 15,380.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.