Home / 18,087.72-27,131.34-4,940.20

Finding the Fourth Proportional to 18,087.72, 27,131.34 and 4,940.20

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Solution

The fourth proportional to 18,087.72, 27,131.34 and 4,940.20 is: 7,410.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,087.72 : 27,131.34 = 4,940.20 : x
  2. Step 2: Convert to fraction form
    18,087.72/27,131.34 = 4,940.20/x
  3. Step 3: Cross multiply
    18,087.72x = 27,131.34 × 4,940.20
  4. Step 4: Simplify right side
    18,087.72x = 134,034,245.87
  5. Step 5: Solve for x
    x = 134,034,245.87/18,087.72
  6. Step 6: Final answer
    x = 7,410.23

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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.