Home / 14,279-21,418.78-3,891.02

Finding the Fourth Proportional to 14,279, 21,418.78 and 3,891.02

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Solution

The fourth proportional to 14,279, 21,418.78 and 3,891.02 is: 5,836.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,279 : 21,418.78 = 3,891.02 : x
  2. Step 2: Convert to fraction form
    14,279/21,418.78 = 3,891.02/x
  3. Step 3: Cross multiply
    14,279x = 21,418.78 × 3,891.02
  4. Step 4: Simplify right side
    14,279x = 83,340,901.36
  5. Step 5: Solve for x
    x = 83,340,901.36/14,279
  6. Step 6: Final answer
    x = 5,836.61

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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.