Home / 18,361.88-27,542.78-5,214.38

Finding the Fourth Proportional to 18,361.88, 27,542.78 and 5,214.38

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Solution

The fourth proportional to 18,361.88, 27,542.78 and 5,214.38 is: 7,821.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,361.88 : 27,542.78 = 5,214.38 : x
  2. Step 2: Convert to fraction form
    18,361.88/27,542.78 = 5,214.38/x
  3. Step 3: Cross multiply
    18,361.88x = 27,542.78 × 5,214.38
  4. Step 4: Simplify right side
    18,361.88x = 143,618,521.18
  5. Step 5: Solve for x
    x = 143,618,521.18/18,361.88
  6. Step 6: Final answer
    x = 7,821.56

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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.