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Finding the Fourth Proportional to 22,190.40, 33,285.60 and 20,003.40

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Solution

The fourth proportional to 22,190.40, 33,285.60 and 20,003.40 is: 30,005.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,190.40 : 33,285.60 = 20,003.40 : x
  2. Step 2: Convert to fraction form
    22,190.40/33,285.60 = 20,003.40/x
  3. Step 3: Cross multiply
    22,190.40x = 33,285.60 × 20,003.40
  4. Step 4: Simplify right side
    22,190.40x = 665,825,171.04
  5. Step 5: Solve for x
    x = 665,825,171.04/22,190.40
  6. Step 6: Final answer
    x = 30,005.10

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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.