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Finding the Fourth Proportional to 33,630.40, 50,445.60 and 13,902.40

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Solution

The fourth proportional to 33,630.40, 50,445.60 and 13,902.40 is: 20,853.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,630.40 : 50,445.60 = 13,902.40 : x
  2. Step 2: Convert to fraction form
    33,630.40/50,445.60 = 13,902.40/x
  3. Step 3: Cross multiply
    33,630.40x = 50,445.60 × 13,902.40
  4. Step 4: Simplify right side
    33,630.40x = 701,314,909.44
  5. Step 5: Solve for x
    x = 701,314,909.44/33,630.40
  6. Step 6: Final answer
    x = 20,853.60

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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.