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Finding the Fourth Proportional to 22,110.20, 33,165.30 and 20,420.60

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Solution

The fourth proportional to 22,110.20, 33,165.30 and 20,420.60 is: 30,630.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,110.20 : 33,165.30 = 20,420.60 : x
  2. Step 2: Convert to fraction form
    22,110.20/33,165.30 = 20,420.60/x
  3. Step 3: Cross multiply
    22,110.20x = 33,165.30 × 20,420.60
  4. Step 4: Simplify right side
    22,110.20x = 677,255,325.18
  5. Step 5: Solve for x
    x = 677,255,325.18/22,110.20
  6. Step 6: Final answer
    x = 30,630.90

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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.