Home / 38,684.88-57,949.56-20,178

Finding the Fourth Proportional to 38,684.88, 57,949.56 and 20,178

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Solution

The fourth proportional to 38,684.88, 57,949.56 and 20,178 is: 30,226.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,684.88 : 57,949.56 = 20,178 : x
  2. Step 2: Convert to fraction form
    38,684.88/57,949.56 = 20,178/x
  3. Step 3: Cross multiply
    38,684.88x = 57,949.56 × 20,178
  4. Step 4: Simplify right side
    38,684.88x = 1,169,306,221.68
  5. Step 5: Solve for x
    x = 1,169,306,221.68/38,684.88
  6. Step 6: Final answer
    x = 30,226.44

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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.