Home / 11,993.05-17,979.85-5,415.04

Finding the Fourth Proportional to 11,993.05, 17,979.85 and 5,415.04

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Solution

The fourth proportional to 11,993.05, 17,979.85 and 5,415.04 is: 8,118.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,993.05 : 17,979.85 = 5,415.04 : x
  2. Step 2: Convert to fraction form
    11,993.05/17,979.85 = 5,415.04/x
  3. Step 3: Cross multiply
    11,993.05x = 17,979.85 × 5,415.04
  4. Step 4: Simplify right side
    11,993.05x = 97,361,606.94
  5. Step 5: Solve for x
    x = 97,361,606.94/11,993.05
  6. Step 6: Final answer
    x = 8,118.17

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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.