Home / 11,719.89-17,579.43-3,928.50

Finding the Fourth Proportional to 11,719.89, 17,579.43 and 3,928.50

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Solution

The fourth proportional to 11,719.89, 17,579.43 and 3,928.50 is: 5,892.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,719.89 : 17,579.43 = 3,928.50 : x
  2. Step 2: Convert to fraction form
    11,719.89/17,579.43 = 3,928.50/x
  3. Step 3: Cross multiply
    11,719.89x = 17,579.43 × 3,928.50
  4. Step 4: Simplify right side
    11,719.89x = 69,060,790.76
  5. Step 5: Solve for x
    x = 69,060,790.76/11,719.89
  6. Step 6: Final answer
    x = 5,892.61

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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.