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Finding the Fourth Proportional to 27,793.60, 41,625.60 and 18,980.80

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Solution

The fourth proportional to 27,793.60, 41,625.60 and 18,980.80 is: 28,426.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,793.60 : 41,625.60 = 18,980.80 : x
  2. Step 2: Convert to fraction form
    27,793.60/41,625.60 = 18,980.80/x
  3. Step 3: Cross multiply
    27,793.60x = 41,625.60 × 18,980.80
  4. Step 4: Simplify right side
    27,793.60x = 790,087,188.48
  5. Step 5: Solve for x
    x = 790,087,188.48/27,793.60
  6. Step 6: Final answer
    x = 28,426.95

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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.