Home / 19,997.70-27,600.68-11,505.54

Finding the Fourth Proportional to 19,997.70, 27,600.68 and 11,505.54

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Solution

The fourth proportional to 19,997.70, 27,600.68 and 11,505.54 is: 15,879.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,997.70 : 27,600.68 = 11,505.54 : x
  2. Step 2: Convert to fraction form
    19,997.70/27,600.68 = 11,505.54/x
  3. Step 3: Cross multiply
    19,997.70x = 27,600.68 × 11,505.54
  4. Step 4: Simplify right side
    19,997.70x = 317,560,727.77
  5. Step 5: Solve for x
    x = 317,560,727.77/19,997.70
  6. Step 6: Final answer
    x = 15,879.86

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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.