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Finding the Fourth Proportional to 12,000, 18,000.94 and 3,234.78

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Solution

The fourth proportional to 12,000, 18,000.94 and 3,234.78 is: 4,852.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,000 : 18,000.94 = 3,234.78 : x
  2. Step 2: Convert to fraction form
    12,000/18,000.94 = 3,234.78/x
  3. Step 3: Cross multiply
    12,000x = 18,000.94 × 3,234.78
  4. Step 4: Simplify right side
    12,000x = 58,229,080.69
  5. Step 5: Solve for x
    x = 58,229,080.69/12,000
  6. Step 6: Final answer
    x = 4,852.42

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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.