Home / 18,205.68-25,125.72-11,136.80

Finding the Fourth Proportional to 18,205.68, 25,125.72 and 11,136.80

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Solution

The fourth proportional to 18,205.68, 25,125.72 and 11,136.80 is: 15,369.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,205.68 : 25,125.72 = 11,136.80 : x
  2. Step 2: Convert to fraction form
    18,205.68/25,125.72 = 11,136.80/x
  3. Step 3: Cross multiply
    18,205.68x = 25,125.72 × 11,136.80
  4. Step 4: Simplify right side
    18,205.68x = 279,820,118.50
  5. Step 5: Solve for x
    x = 279,820,118.50/18,205.68
  6. Step 6: Final answer
    x = 15,369.94

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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.