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Finding the Fourth Proportional to 33,630.60, 50,445.90 and 21,820.80

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Solution

The fourth proportional to 33,630.60, 50,445.90 and 21,820.80 is: 32,731.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,630.60 : 50,445.90 = 21,820.80 : x
  2. Step 2: Convert to fraction form
    33,630.60/50,445.90 = 21,820.80/x
  3. Step 3: Cross multiply
    33,630.60x = 50,445.90 × 21,820.80
  4. Step 4: Simplify right side
    33,630.60x = 1,100,769,894.72
  5. Step 5: Solve for x
    x = 1,100,769,894.72/33,630.60
  6. Step 6: Final answer
    x = 32,731.20

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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.