Home / 11,355.33-15,669.27-8,372.78

Finding the Fourth Proportional to 11,355.33, 15,669.27 and 8,372.78

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Solution

The fourth proportional to 11,355.33, 15,669.27 and 8,372.78 is: 11,553.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,355.33 : 15,669.27 = 8,372.78 : x
  2. Step 2: Convert to fraction form
    11,355.33/15,669.27 = 8,372.78/x
  3. Step 3: Cross multiply
    11,355.33x = 15,669.27 × 8,372.78
  4. Step 4: Simplify right side
    11,355.33x = 131,195,272.12
  5. Step 5: Solve for x
    x = 131,195,272.12/11,355.33
  6. Step 6: Final answer
    x = 11,553.63

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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.