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Finding the Fourth Proportional to 17,998.61, 27,009.96 and 6,311.82

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Solution

The fourth proportional to 17,998.61, 27,009.96 and 6,311.82 is: 9,471.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,998.61 : 27,009.96 = 6,311.82 : x
  2. Step 2: Convert to fraction form
    17,998.61/27,009.96 = 6,311.82/x
  3. Step 3: Cross multiply
    17,998.61x = 27,009.96 × 6,311.82
  4. Step 4: Simplify right side
    17,998.61x = 170,482,083.35
  5. Step 5: Solve for x
    x = 170,482,083.35/17,998.61
  6. Step 6: Final answer
    x = 9,471.96

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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.