Home / 11,720.20-17,579.22-3,929.08

Finding the Fourth Proportional to 11,720.20, 17,579.22 and 3,929.08

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Solution

The fourth proportional to 11,720.20, 17,579.22 and 3,929.08 is: 5,893.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,720.20 : 17,579.22 = 3,929.08 : x
  2. Step 2: Convert to fraction form
    11,720.20/17,579.22 = 3,929.08/x
  3. Step 3: Cross multiply
    11,720.20x = 17,579.22 × 3,929.08
  4. Step 4: Simplify right side
    11,720.20x = 69,070,161.72
  5. Step 5: Solve for x
    x = 69,070,161.72/11,720.20
  6. Step 6: Final answer
    x = 5,893.26

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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.