Home / 12,039.60-18,059.91-3,719.43

Finding the Fourth Proportional to 12,039.60, 18,059.91 and 3,719.43

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Solution

The fourth proportional to 12,039.60, 18,059.91 and 3,719.43 is: 5,579.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,039.60 : 18,059.91 = 3,719.43 : x
  2. Step 2: Convert to fraction form
    12,039.60/18,059.91 = 3,719.43/x
  3. Step 3: Cross multiply
    12,039.60x = 18,059.91 × 3,719.43
  4. Step 4: Simplify right side
    12,039.60x = 67,172,571.05
  5. Step 5: Solve for x
    x = 67,172,571.05/12,039.60
  6. Step 6: Final answer
    x = 5,579.30

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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.