Home / 12,135.92-18,199.92-3,926

Finding the Fourth Proportional to 12,135.92, 18,199.92 and 3,926

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Solution

The fourth proportional to 12,135.92, 18,199.92 and 3,926 is: 5,887.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.92 : 18,199.92 = 3,926 : x
  2. Step 2: Convert to fraction form
    12,135.92/18,199.92 = 3,926/x
  3. Step 3: Cross multiply
    12,135.92x = 18,199.92 × 3,926
  4. Step 4: Simplify right side
    12,135.92x = 71,452,885.92
  5. Step 5: Solve for x
    x = 71,452,885.92/12,135.92
  6. Step 6: Final answer
    x = 5,887.72

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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.