Home / 12,141.45-18,213.21-3,819.02

Finding the Fourth Proportional to 12,141.45, 18,213.21 and 3,819.02

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Solution

The fourth proportional to 12,141.45, 18,213.21 and 3,819.02 is: 5,728.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,141.45 : 18,213.21 = 3,819.02 : x
  2. Step 2: Convert to fraction form
    12,141.45/18,213.21 = 3,819.02/x
  3. Step 3: Cross multiply
    12,141.45x = 18,213.21 × 3,819.02
  4. Step 4: Simplify right side
    12,141.45x = 69,556,522.19
  5. Step 5: Solve for x
    x = 69,556,522.19/12,141.45
  6. Step 6: Final answer
    x = 5,728.85

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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.