Home / 28,780.32-43,189.92-11,247.96

Finding the Fourth Proportional to 28,780.32, 43,189.92 and 11,247.96

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Solution

The fourth proportional to 28,780.32, 43,189.92 and 11,247.96 is: 16,879.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,780.32 : 43,189.92 = 11,247.96 : x
  2. Step 2: Convert to fraction form
    28,780.32/43,189.92 = 11,247.96/x
  3. Step 3: Cross multiply
    28,780.32x = 43,189.92 × 11,247.96
  4. Step 4: Simplify right side
    28,780.32x = 485,798,492.56
  5. Step 5: Solve for x
    x = 485,798,492.56/28,780.32
  6. Step 6: Final answer
    x = 16,879.54

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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.