Home / 11,909.91-16,435.79-6,604.61

Finding the Fourth Proportional to 11,909.91, 16,435.79 and 6,604.61

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Solution

The fourth proportional to 11,909.91, 16,435.79 and 6,604.61 is: 9,114.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,909.91 : 16,435.79 = 6,604.61 : x
  2. Step 2: Convert to fraction form
    11,909.91/16,435.79 = 6,604.61/x
  3. Step 3: Cross multiply
    11,909.91x = 16,435.79 × 6,604.61
  4. Step 4: Simplify right side
    11,909.91x = 108,551,982.99
  5. Step 5: Solve for x
    x = 108,551,982.99/11,909.91
  6. Step 6: Final answer
    x = 9,114.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.