Home / 18,217.20-27,334.31-7,121.01

Finding the Fourth Proportional to 18,217.20, 27,334.31 and 7,121.01

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Solution

The fourth proportional to 18,217.20, 27,334.31 and 7,121.01 is: 10,684.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,217.20 : 27,334.31 = 7,121.01 : x
  2. Step 2: Convert to fraction form
    18,217.20/27,334.31 = 7,121.01/x
  3. Step 3: Cross multiply
    18,217.20x = 27,334.31 × 7,121.01
  4. Step 4: Simplify right side
    18,217.20x = 194,647,859.25
  5. Step 5: Solve for x
    x = 194,647,859.25/18,217.20
  6. Step 6: Final answer
    x = 10,684.84

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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.