Home / 31,387.98-43,314.42-17,239.92

Finding the Fourth Proportional to 31,387.98, 43,314.42 and 17,239.92

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Solution

The fourth proportional to 31,387.98, 43,314.42 and 17,239.92 is: 23,790.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,387.98 : 43,314.42 = 17,239.92 : x
  2. Step 2: Convert to fraction form
    31,387.98/43,314.42 = 17,239.92/x
  3. Step 3: Cross multiply
    31,387.98x = 43,314.42 × 17,239.92
  4. Step 4: Simplify right side
    31,387.98x = 746,737,135.65
  5. Step 5: Solve for x
    x = 746,737,135.65/31,387.98
  6. Step 6: Final answer
    x = 23,790.54

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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.