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Finding the Fourth Proportional to 18,793.62, 28,212.30 and 14,915.34

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Solution

The fourth proportional to 18,793.62, 28,212.30 and 14,915.34 is: 22,390.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,793.62 : 28,212.30 = 14,915.34 : x
  2. Step 2: Convert to fraction form
    18,793.62/28,212.30 = 14,915.34/x
  3. Step 3: Cross multiply
    18,793.62x = 28,212.30 × 14,915.34
  4. Step 4: Simplify right side
    18,793.62x = 420,796,046.68
  5. Step 5: Solve for x
    x = 420,796,046.68/18,793.62
  6. Step 6: Final answer
    x = 22,390.37

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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.