Home / 11,109.76-16,664.32-2,789.76

Finding the Fourth Proportional to 11,109.76, 16,664.32 and 2,789.76

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Solution

The fourth proportional to 11,109.76, 16,664.32 and 2,789.76 is: 4,184.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,109.76 : 16,664.32 = 2,789.76 : x
  2. Step 2: Convert to fraction form
    11,109.76/16,664.32 = 2,789.76/x
  3. Step 3: Cross multiply
    11,109.76x = 16,664.32 × 2,789.76
  4. Step 4: Simplify right side
    11,109.76x = 46,489,453.36
  5. Step 5: Solve for x
    x = 46,489,453.36/11,109.76
  6. Step 6: Final answer
    x = 4,184.56

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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.