Home / 13,616.62-20,422.50-3,621.42

Finding the Fourth Proportional to 13,616.62, 20,422.50 and 3,621.42

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Solution

The fourth proportional to 13,616.62, 20,422.50 and 3,621.42 is: 5,431.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,616.62 : 20,422.50 = 3,621.42 : x
  2. Step 2: Convert to fraction form
    13,616.62/20,422.50 = 3,621.42/x
  3. Step 3: Cross multiply
    13,616.62x = 20,422.50 × 3,621.42
  4. Step 4: Simplify right side
    13,616.62x = 73,958,436.37
  5. Step 5: Solve for x
    x = 73,958,436.37/13,616.62
  6. Step 6: Final answer
    x = 5,431.48

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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.