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Finding the Fourth Proportional to 11,859.30, 17,789.12 and 3,539.48

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Solution

The fourth proportional to 11,859.30, 17,789.12 and 3,539.48 is: 5,309.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,859.30 : 17,789.12 = 3,539.48 : x
  2. Step 2: Convert to fraction form
    11,859.30/17,789.12 = 3,539.48/x
  3. Step 3: Cross multiply
    11,859.30x = 17,789.12 × 3,539.48
  4. Step 4: Simplify right side
    11,859.30x = 62,964,234.46
  5. Step 5: Solve for x
    x = 62,964,234.46/11,859.30
  6. Step 6: Final answer
    x = 5,309.27

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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.