Home / 11,719.58-17,579.28-3,928.34

Finding the Fourth Proportional to 11,719.58, 17,579.28 and 3,928.34

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Solution

The fourth proportional to 11,719.58, 17,579.28 and 3,928.34 is: 5,892.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,719.58 : 17,579.28 = 3,928.34 : x
  2. Step 2: Convert to fraction form
    11,719.58/17,579.28 = 3,928.34/x
  3. Step 3: Cross multiply
    11,719.58x = 17,579.28 × 3,928.34
  4. Step 4: Simplify right side
    11,719.58x = 69,057,388.80
  5. Step 5: Solve for x
    x = 69,057,388.80/11,719.58
  6. Step 6: Final answer
    x = 5,892.48

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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.