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Finding the Fourth Proportional to 11,889.99, 17,819.24 and 6,331.37

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Solution

The fourth proportional to 11,889.99, 17,819.24 and 6,331.37 is: 9,488.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,889.99 : 17,819.24 = 6,331.37 : x
  2. Step 2: Convert to fraction form
    11,889.99/17,819.24 = 6,331.37/x
  3. Step 3: Cross multiply
    11,889.99x = 17,819.24 × 6,331.37
  4. Step 4: Simplify right side
    11,889.99x = 112,820,116.42
  5. Step 5: Solve for x
    x = 112,820,116.42/11,889.99
  6. Step 6: Final answer
    x = 9,488.66

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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.