Home / 13,179.58-19,769.39-3,318.79

Finding the Fourth Proportional to 13,179.58, 19,769.39 and 3,318.79

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Solution

The fourth proportional to 13,179.58, 19,769.39 and 3,318.79 is: 4,978.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,179.58 : 19,769.39 = 3,318.79 : x
  2. Step 2: Convert to fraction form
    13,179.58/19,769.39 = 3,318.79/x
  3. Step 3: Cross multiply
    13,179.58x = 19,769.39 × 3,318.79
  4. Step 4: Simplify right side
    13,179.58x = 65,610,400.27
  5. Step 5: Solve for x
    x = 65,610,400.27/13,179.58
  6. Step 6: Final answer
    x = 4,978.19

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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.