Home / 21,091.14-29,105.94-11,660.28

Finding the Fourth Proportional to 21,091.14, 29,105.94 and 11,660.28

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Solution

The fourth proportional to 21,091.14, 29,105.94 and 11,660.28 is: 16,091.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,091.14 : 29,105.94 = 11,660.28 : x
  2. Step 2: Convert to fraction form
    21,091.14/29,105.94 = 11,660.28/x
  3. Step 3: Cross multiply
    21,091.14x = 29,105.94 × 11,660.28
  4. Step 4: Simplify right side
    21,091.14x = 339,383,410.06
  5. Step 5: Solve for x
    x = 339,383,410.06/21,091.14
  6. Step 6: Final answer
    x = 16,091.28

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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.