Home / 11,133.76-16,709.10-4,120.41

Finding the Fourth Proportional to 11,133.76, 16,709.10 and 4,120.41

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Solution

The fourth proportional to 11,133.76, 16,709.10 and 4,120.41 is: 6,183.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,133.76 : 16,709.10 = 4,120.41 : x
  2. Step 2: Convert to fraction form
    11,133.76/16,709.10 = 4,120.41/x
  3. Step 3: Cross multiply
    11,133.76x = 16,709.10 × 4,120.41
  4. Step 4: Simplify right side
    11,133.76x = 68,848,342.73
  5. Step 5: Solve for x
    x = 68,848,342.73/11,133.76
  6. Step 6: Final answer
    x = 6,183.75

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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.