Home / 21,091.44-29,105.18-11,531.82

Finding the Fourth Proportional to 21,091.44, 29,105.18 and 11,531.82

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Solution

The fourth proportional to 21,091.44, 29,105.18 and 11,531.82 is: 15,913.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,091.44 : 29,105.18 = 11,531.82 : x
  2. Step 2: Convert to fraction form
    21,091.44/29,105.18 = 11,531.82/x
  3. Step 3: Cross multiply
    21,091.44x = 29,105.18 × 11,531.82
  4. Step 4: Simplify right side
    21,091.44x = 335,635,493.64
  5. Step 5: Solve for x
    x = 335,635,493.64/21,091.44
  6. Step 6: Final answer
    x = 15,913.36

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1.5x scale

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.