Home / 18,515.21-25,524.41-13,200.80

Finding the Fourth Proportional to 18,515.21, 25,524.41 and 13,200.80

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Solution

The fourth proportional to 18,515.21, 25,524.41 and 13,200.80 is: 18,198.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,515.21 : 25,524.41 = 13,200.80 : x
  2. Step 2: Convert to fraction form
    18,515.21/25,524.41 = 13,200.80/x
  3. Step 3: Cross multiply
    18,515.21x = 25,524.41 × 13,200.80
  4. Step 4: Simplify right side
    18,515.21x = 336,942,631.53
  5. Step 5: Solve for x
    x = 336,942,631.53/18,515.21
  6. Step 6: Final answer
    x = 18,198.15

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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.