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Finding the Fourth Proportional to 18,793.14, 28,230.39 and 12,215.94

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Solution

The fourth proportional to 18,793.14, 28,230.39 and 12,215.94 is: 18,350.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,793.14 : 28,230.39 = 12,215.94 : x
  2. Step 2: Convert to fraction form
    18,793.14/28,230.39 = 12,215.94/x
  3. Step 3: Cross multiply
    18,793.14x = 28,230.39 × 12,215.94
  4. Step 4: Simplify right side
    18,793.14x = 344,860,750.42
  5. Step 5: Solve for x
    x = 344,860,750.42/18,793.14
  6. Step 6: Final answer
    x = 18,350.35

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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.