Home / 28,985.26-43,469.18-11,212.78

Finding the Fourth Proportional to 28,985.26, 43,469.18 and 11,212.78

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Solution

The fourth proportional to 28,985.26, 43,469.18 and 11,212.78 is: 16,815.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,985.26 : 43,469.18 = 11,212.78 : x
  2. Step 2: Convert to fraction form
    28,985.26/43,469.18 = 11,212.78/x
  3. Step 3: Cross multiply
    28,985.26x = 43,469.18 × 11,212.78
  4. Step 4: Simplify right side
    28,985.26x = 487,410,352.12
  5. Step 5: Solve for x
    x = 487,410,352.12/28,985.26
  6. Step 6: Final answer
    x = 16,815.80

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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.