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Finding the Fourth Proportional to 23,180.80, 34,771.20 and 8,394.40

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Solution

The fourth proportional to 23,180.80, 34,771.20 and 8,394.40 is: 12,591.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,180.80 : 34,771.20 = 8,394.40 : x
  2. Step 2: Convert to fraction form
    23,180.80/34,771.20 = 8,394.40/x
  3. Step 3: Cross multiply
    23,180.80x = 34,771.20 × 8,394.40
  4. Step 4: Simplify right side
    23,180.80x = 291,883,361.28
  5. Step 5: Solve for x
    x = 291,883,361.28/23,180.80
  6. Step 6: Final answer
    x = 12,591.60

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Similar ratio
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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.