Home / 11,716.72-17,579.04-5,139.52

Finding the Fourth Proportional to 11,716.72, 17,579.04 and 5,139.52

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Solution

The fourth proportional to 11,716.72, 17,579.04 and 5,139.52 is: 7,711.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,716.72 : 17,579.04 = 5,139.52 : x
  2. Step 2: Convert to fraction form
    11,716.72/17,579.04 = 5,139.52/x
  3. Step 3: Cross multiply
    11,716.72x = 17,579.04 × 5,139.52
  4. Step 4: Simplify right side
    11,716.72x = 90,347,827.66
  5. Step 5: Solve for x
    x = 90,347,827.66/11,716.72
  6. Step 6: Final answer
    x = 7,711.02

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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.