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Finding the Fourth Proportional to 43,507.91, 65,270.03 and 13,917.80

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Solution

The fourth proportional to 43,507.91, 65,270.03 and 13,917.80 is: 20,879.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,507.91 : 65,270.03 = 13,917.80 : x
  2. Step 2: Convert to fraction form
    43,507.91/65,270.03 = 13,917.80/x
  3. Step 3: Cross multiply
    43,507.91x = 65,270.03 × 13,917.80
  4. Step 4: Simplify right side
    43,507.91x = 908,414,827.59
  5. Step 5: Solve for x
    x = 908,414,827.59/43,507.91
  6. Step 6: Final answer
    x = 20,879.31

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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.