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Finding the Fourth Proportional to 28,956, 43,434.48 and 11,425.68

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Solution

The fourth proportional to 28,956, 43,434.48 and 11,425.68 is: 17,138.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,956 : 43,434.48 = 11,425.68 : x
  2. Step 2: Convert to fraction form
    28,956/43,434.48 = 11,425.68/x
  3. Step 3: Cross multiply
    28,956x = 43,434.48 × 11,425.68
  4. Step 4: Simplify right side
    28,956x = 496,268,469.45
  5. Step 5: Solve for x
    x = 496,268,469.45/28,956
  6. Step 6: Final answer
    x = 17,138.71

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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.