Home / 13,319.92-19,979.89-3,458.37

Finding the Fourth Proportional to 13,319.92, 19,979.89 and 3,458.37

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Solution

The fourth proportional to 13,319.92, 19,979.89 and 3,458.37 is: 5,187.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.92 : 19,979.89 = 3,458.37 : x
  2. Step 2: Convert to fraction form
    13,319.92/19,979.89 = 3,458.37/x
  3. Step 3: Cross multiply
    13,319.92x = 19,979.89 × 3,458.37
  4. Step 4: Simplify right side
    13,319.92x = 69,097,852.18
  5. Step 5: Solve for x
    x = 69,097,852.18/13,319.92
  6. Step 6: Final answer
    x = 5,187.56

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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.