Home / 18,929.22-28,405.17-7,836.06

Finding the Fourth Proportional to 18,929.22, 28,405.17 and 7,836.06

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Solution

The fourth proportional to 18,929.22, 28,405.17 and 7,836.06 is: 11,758.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,929.22 : 28,405.17 = 7,836.06 : x
  2. Step 2: Convert to fraction form
    18,929.22/28,405.17 = 7,836.06/x
  3. Step 3: Cross multiply
    18,929.22x = 28,405.17 × 7,836.06
  4. Step 4: Simplify right side
    18,929.22x = 222,584,616.43
  5. Step 5: Solve for x
    x = 222,584,616.43/18,929.22
  6. Step 6: Final answer
    x = 11,758.78

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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.