Home / 38,512.05-57,786.57-18,779.85

Finding the Fourth Proportional to 38,512.05, 57,786.57 and 18,779.85

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Solution

The fourth proportional to 38,512.05, 57,786.57 and 18,779.85 is: 28,178.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,512.05 : 57,786.57 = 18,779.85 : x
  2. Step 2: Convert to fraction form
    38,512.05/57,786.57 = 18,779.85/x
  3. Step 3: Cross multiply
    38,512.05x = 57,786.57 × 18,779.85
  4. Step 4: Simplify right side
    38,512.05x = 1,085,223,116.61
  5. Step 5: Solve for x
    x = 1,085,223,116.61/38,512.05
  6. Step 6: Final answer
    x = 28,178.79

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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.