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Finding the Fourth Proportional to 22,110.78, 33,175.89 and 7,321.80

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Solution

The fourth proportional to 22,110.78, 33,175.89 and 7,321.80 is: 10,985.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,110.78 : 33,175.89 = 7,321.80 : x
  2. Step 2: Convert to fraction form
    22,110.78/33,175.89 = 7,321.80/x
  3. Step 3: Cross multiply
    22,110.78x = 33,175.89 × 7,321.80
  4. Step 4: Simplify right side
    22,110.78x = 242,907,231.40
  5. Step 5: Solve for x
    x = 242,907,231.40/22,110.78
  6. Step 6: Final answer
    x = 10,985.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.