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Finding the Fourth Proportional to 19,227.60, 28,845.18 and 8,134.20

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Solution

The fourth proportional to 19,227.60, 28,845.18 and 8,134.20 is: 12,202.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,227.60 : 28,845.18 = 8,134.20 : x
  2. Step 2: Convert to fraction form
    19,227.60/28,845.18 = 8,134.20/x
  3. Step 3: Cross multiply
    19,227.60x = 28,845.18 × 8,134.20
  4. Step 4: Simplify right side
    19,227.60x = 234,632,463.16
  5. Step 5: Solve for x
    x = 234,632,463.16/19,227.60
  6. Step 6: Final answer
    x = 12,202.90

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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.