Home / 18,087.75-27,131.45-4,940.12

Finding the Fourth Proportional to 18,087.75, 27,131.45 and 4,940.12

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Solution

The fourth proportional to 18,087.75, 27,131.45 and 4,940.12 is: 7,410.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,087.75 : 27,131.45 = 4,940.12 : x
  2. Step 2: Convert to fraction form
    18,087.75/27,131.45 = 4,940.12/x
  3. Step 3: Cross multiply
    18,087.75x = 27,131.45 × 4,940.12
  4. Step 4: Simplify right side
    18,087.75x = 134,032,661.90
  5. Step 5: Solve for x
    x = 134,032,661.90/18,087.75
  6. Step 6: Final answer
    x = 7,410.13

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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.