Home / 11,979.18-17,971.41-3,659.84

Finding the Fourth Proportional to 11,979.18, 17,971.41 and 3,659.84

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Solution

The fourth proportional to 11,979.18, 17,971.41 and 3,659.84 is: 5,490.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,979.18 : 17,971.41 = 3,659.84 : x
  2. Step 2: Convert to fraction form
    11,979.18/17,971.41 = 3,659.84/x
  3. Step 3: Cross multiply
    11,979.18x = 17,971.41 × 3,659.84
  4. Step 4: Simplify right side
    11,979.18x = 65,772,466.10
  5. Step 5: Solve for x
    x = 65,772,466.10/11,979.18
  6. Step 6: Final answer
    x = 5,490.57

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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.