Home / 31,285.94-43,174.17-17,138.88

Finding the Fourth Proportional to 31,285.94, 43,174.17 and 17,138.88

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Solution

The fourth proportional to 31,285.94, 43,174.17 and 17,138.88 is: 23,651.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,285.94 : 43,174.17 = 17,138.88 : x
  2. Step 2: Convert to fraction form
    31,285.94/43,174.17 = 17,138.88/x
  3. Step 3: Cross multiply
    31,285.94x = 43,174.17 × 17,138.88
  4. Step 4: Simplify right side
    31,285.94x = 739,956,918.73
  5. Step 5: Solve for x
    x = 739,956,918.73/31,285.94
  6. Step 6: Final answer
    x = 23,651.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.