Home / 28,939.20-43,404.48-8,160

Finding the Fourth Proportional to 28,939.20, 43,404.48 and 8,160

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Solution

The fourth proportional to 28,939.20, 43,404.48 and 8,160 is: 12,238.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,939.20 : 43,404.48 = 8,160 : x
  2. Step 2: Convert to fraction form
    28,939.20/43,404.48 = 8,160/x
  3. Step 3: Cross multiply
    28,939.20x = 43,404.48 × 8,160
  4. Step 4: Simplify right side
    28,939.20x = 354,180,556.80
  5. Step 5: Solve for x
    x = 354,180,556.80/28,939.20
  6. Step 6: Final answer
    x = 12,238.78

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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.