Home / 11,938.24-16,481.64-7,972.48

Finding the Fourth Proportional to 11,938.24, 16,481.64 and 7,972.48

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Solution

The fourth proportional to 11,938.24, 16,481.64 and 7,972.48 is: 11,006.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,938.24 : 16,481.64 = 7,972.48 : x
  2. Step 2: Convert to fraction form
    11,938.24/16,481.64 = 7,972.48/x
  3. Step 3: Cross multiply
    11,938.24x = 16,481.64 × 7,972.48
  4. Step 4: Simplify right side
    11,938.24x = 131,399,545.27
  5. Step 5: Solve for x
    x = 131,399,545.27/11,938.24
  6. Step 6: Final answer
    x = 11,006.61

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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.