Home / 11,998.20-18,002.70-4,212.60

Finding the Fourth Proportional to 11,998.20, 18,002.70 and 4,212.60

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Solution

The fourth proportional to 11,998.20, 18,002.70 and 4,212.60 is: 6,320.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,998.20 : 18,002.70 = 4,212.60 : x
  2. Step 2: Convert to fraction form
    11,998.20/18,002.70 = 4,212.60/x
  3. Step 3: Cross multiply
    11,998.20x = 18,002.70 × 4,212.60
  4. Step 4: Simplify right side
    11,998.20x = 75,838,174.02
  5. Step 5: Solve for x
    x = 75,838,174.02/11,998.20
  6. Step 6: Final answer
    x = 6,320.80

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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.