Home / 11,386.12-17,081.61-3,991.03

Finding the Fourth Proportional to 11,386.12, 17,081.61 and 3,991.03

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Solution

The fourth proportional to 11,386.12, 17,081.61 and 3,991.03 is: 5,987.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,386.12 : 17,081.61 = 3,991.03 : x
  2. Step 2: Convert to fraction form
    11,386.12/17,081.61 = 3,991.03/x
  3. Step 3: Cross multiply
    11,386.12x = 17,081.61 × 3,991.03
  4. Step 4: Simplify right side
    11,386.12x = 68,173,217.96
  5. Step 5: Solve for x
    x = 68,173,217.96/11,386.12
  6. Step 6: Final answer
    x = 5,987.40

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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.