Home / 43,905.09-65,811.38-18,939.27

Finding the Fourth Proportional to 43,905.09, 65,811.38 and 18,939.27

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Solution

The fourth proportional to 43,905.09, 65,811.38 and 18,939.27 is: 28,388.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,905.09 : 65,811.38 = 18,939.27 : x
  2. Step 2: Convert to fraction form
    43,905.09/65,811.38 = 18,939.27/x
  3. Step 3: Cross multiply
    43,905.09x = 65,811.38 × 18,939.27
  4. Step 4: Simplify right side
    43,905.09x = 1,246,419,400.20
  5. Step 5: Solve for x
    x = 1,246,419,400.20/43,905.09
  6. Step 6: Final answer
    x = 28,388.95

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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.