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Finding the Fourth Proportional to 12,793.60, 19,168.80 and 8,408.80

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Solution

The fourth proportional to 12,793.60, 19,168.80 and 8,408.80 is: 12,599.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,793.60 : 19,168.80 = 8,408.80 : x
  2. Step 2: Convert to fraction form
    12,793.60/19,168.80 = 8,408.80/x
  3. Step 3: Cross multiply
    12,793.60x = 19,168.80 × 8,408.80
  4. Step 4: Simplify right side
    12,793.60x = 161,186,605.44
  5. Step 5: Solve for x
    x = 161,186,605.44/12,793.60
  6. Step 6: Final answer
    x = 12,599.00

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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.