Home / 18,121.24-27,156.14-7,579.90

Finding the Fourth Proportional to 18,121.24, 27,156.14 and 7,579.90

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Solution

The fourth proportional to 18,121.24, 27,156.14 and 7,579.90 is: 11,359.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.24 : 27,156.14 = 7,579.90 : x
  2. Step 2: Convert to fraction form
    18,121.24/27,156.14 = 7,579.90/x
  3. Step 3: Cross multiply
    18,121.24x = 27,156.14 × 7,579.90
  4. Step 4: Simplify right side
    18,121.24x = 205,840,825.59
  5. Step 5: Solve for x
    x = 205,840,825.59/18,121.24
  6. Step 6: Final answer
    x = 11,359.09

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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.