Home / 28,778.78-43,171.18-11,009.41

Finding the Fourth Proportional to 28,778.78, 43,171.18 and 11,009.41

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Solution

The fourth proportional to 28,778.78, 43,171.18 and 11,009.41 is: 16,515.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,778.78 : 43,171.18 = 11,009.41 : x
  2. Step 2: Convert to fraction form
    28,778.78/43,171.18 = 11,009.41/x
  3. Step 3: Cross multiply
    28,778.78x = 43,171.18 × 11,009.41
  4. Step 4: Simplify right side
    28,778.78x = 475,289,220.80
  5. Step 5: Solve for x
    x = 475,289,220.80/28,778.78
  6. Step 6: Final answer
    x = 16,515.27

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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.