Home / 22,112.20-33,170-7,331.60

Finding the Fourth Proportional to 22,112.20, 33,170 and 7,331.60

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Solution

The fourth proportional to 22,112.20, 33,170 and 7,331.60 is: 10,997.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,112.20 : 33,170 = 7,331.60 : x
  2. Step 2: Convert to fraction form
    22,112.20/33,170 = 7,331.60/x
  3. Step 3: Cross multiply
    22,112.20x = 33,170 × 7,331.60
  4. Step 4: Simplify right side
    22,112.20x = 243,189,172
  5. Step 5: Solve for x
    x = 243,189,172/22,112.20
  6. Step 6: Final answer
    x = 10,997.96

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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.