Home / 11,998.59-18,000.72-5,424.76

Finding the Fourth Proportional to 11,998.59, 18,000.72 and 5,424.76

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Solution

The fourth proportional to 11,998.59, 18,000.72 and 5,424.76 is: 8,138.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,998.59 : 18,000.72 = 5,424.76 : x
  2. Step 2: Convert to fraction form
    11,998.59/18,000.72 = 5,424.76/x
  3. Step 3: Cross multiply
    11,998.59x = 18,000.72 × 5,424.76
  4. Step 4: Simplify right side
    11,998.59x = 97,649,608.33
  5. Step 5: Solve for x
    x = 97,649,608.33/11,998.59
  6. Step 6: Final answer
    x = 8,138.43

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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.