Home / 11,719.87-17,579.80-3,934.15

Finding the Fourth Proportional to 11,719.87, 17,579.80 and 3,934.15

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Solution

The fourth proportional to 11,719.87, 17,579.80 and 3,934.15 is: 5,901.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,719.87 : 17,579.80 = 3,934.15 : x
  2. Step 2: Convert to fraction form
    11,719.87/17,579.80 = 3,934.15/x
  3. Step 3: Cross multiply
    11,719.87x = 17,579.80 × 3,934.15
  4. Step 4: Simplify right side
    11,719.87x = 69,161,570.17
  5. Step 5: Solve for x
    x = 69,161,570.17/11,719.87
  6. Step 6: Final answer
    x = 5,901.22

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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.