Home / 18,621.78-27,923.88-6,767.30

Finding the Fourth Proportional to 18,621.78, 27,923.88 and 6,767.30

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Solution

The fourth proportional to 18,621.78, 27,923.88 and 6,767.30 is: 10,147.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,621.78 : 27,923.88 = 6,767.30 : x
  2. Step 2: Convert to fraction form
    18,621.78/27,923.88 = 6,767.30/x
  3. Step 3: Cross multiply
    18,621.78x = 27,923.88 × 6,767.30
  4. Step 4: Simplify right side
    18,621.78x = 188,969,133.50
  5. Step 5: Solve for x
    x = 188,969,133.50/18,621.78
  6. Step 6: Final answer
    x = 10,147.75

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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.