Home / 43,620.69-65,442.38-12,458.37

Finding the Fourth Proportional to 43,620.69, 65,442.38 and 12,458.37

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Solution

The fourth proportional to 43,620.69, 65,442.38 and 12,458.37 is: 18,690.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,620.69 : 65,442.38 = 12,458.37 : x
  2. Step 2: Convert to fraction form
    43,620.69/65,442.38 = 12,458.37/x
  3. Step 3: Cross multiply
    43,620.69x = 65,442.38 × 12,458.37
  4. Step 4: Simplify right side
    43,620.69x = 815,305,321.43
  5. Step 5: Solve for x
    x = 815,305,321.43/43,620.69
  6. Step 6: Final answer
    x = 18,690.79

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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.