Home / 43,429.64-65,128.05-18,481.43

Finding the Fourth Proportional to 43,429.64, 65,128.05 and 18,481.43

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Solution

The fourth proportional to 43,429.64, 65,128.05 and 18,481.43 is: 27,715.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,429.64 : 65,128.05 = 18,481.43 : x
  2. Step 2: Convert to fraction form
    43,429.64/65,128.05 = 18,481.43/x
  3. Step 3: Cross multiply
    43,429.64x = 65,128.05 × 18,481.43
  4. Step 4: Simplify right side
    43,429.64x = 1,203,659,659.93
  5. Step 5: Solve for x
    x = 1,203,659,659.93/43,429.64
  6. Step 6: Final answer
    x = 27,715.17

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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.