Home / 11,105.11-16,649.37-6,721.51

Finding the Fourth Proportional to 11,105.11, 16,649.37 and 6,721.51

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Solution

The fourth proportional to 11,105.11, 16,649.37 and 6,721.51 is: 10,077.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,105.11 : 16,649.37 = 6,721.51 : x
  2. Step 2: Convert to fraction form
    11,105.11/16,649.37 = 6,721.51/x
  3. Step 3: Cross multiply
    11,105.11x = 16,649.37 × 6,721.51
  4. Step 4: Simplify right side
    11,105.11x = 111,908,906.95
  5. Step 5: Solve for x
    x = 111,908,906.95/11,105.11
  6. Step 6: Final answer
    x = 10,077.24

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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.