Home / 31,379.26-43,307.91-18,805.18

Finding the Fourth Proportional to 31,379.26, 43,307.91 and 18,805.18

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Solution

The fourth proportional to 31,379.26, 43,307.91 and 18,805.18 is: 25,953.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,379.26 : 43,307.91 = 18,805.18 : x
  2. Step 2: Convert to fraction form
    31,379.26/43,307.91 = 18,805.18/x
  3. Step 3: Cross multiply
    31,379.26x = 43,307.91 × 18,805.18
  4. Step 4: Simplify right side
    31,379.26x = 814,413,042.97
  5. Step 5: Solve for x
    x = 814,413,042.97/31,379.26
  6. Step 6: Final answer
    x = 25,953.86

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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.