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Finding the Fourth Proportional to 18,065.99, 27,099 and 11,865.24

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Solution

The fourth proportional to 18,065.99, 27,099 and 11,865.24 is: 17,797.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,065.99 : 27,099 = 11,865.24 : x
  2. Step 2: Convert to fraction form
    18,065.99/27,099 = 11,865.24/x
  3. Step 3: Cross multiply
    18,065.99x = 27,099 × 11,865.24
  4. Step 4: Simplify right side
    18,065.99x = 321,536,138.76
  5. Step 5: Solve for x
    x = 321,536,138.76/18,065.99
  6. Step 6: Final answer
    x = 17,797.87

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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.