Home / 18,519.78-27,774.71-5,192.03

Finding the Fourth Proportional to 18,519.78, 27,774.71 and 5,192.03

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Solution

The fourth proportional to 18,519.78, 27,774.71 and 5,192.03 is: 7,786.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,519.78 : 27,774.71 = 5,192.03 : x
  2. Step 2: Convert to fraction form
    18,519.78/27,774.71 = 5,192.03/x
  3. Step 3: Cross multiply
    18,519.78x = 27,774.71 × 5,192.03
  4. Step 4: Simplify right side
    18,519.78x = 144,206,962.73
  5. Step 5: Solve for x
    x = 144,206,962.73/18,519.78
  6. Step 6: Final answer
    x = 7,786.65

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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.