Home / 25,761.34-38,644.62-7,991.38

Finding the Fourth Proportional to 25,761.34, 38,644.62 and 7,991.38

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Solution

The fourth proportional to 25,761.34, 38,644.62 and 7,991.38 is: 11,987.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,761.34 : 38,644.62 = 7,991.38 : x
  2. Step 2: Convert to fraction form
    25,761.34/38,644.62 = 7,991.38/x
  3. Step 3: Cross multiply
    25,761.34x = 38,644.62 × 7,991.38
  4. Step 4: Simplify right side
    25,761.34x = 308,823,843.38
  5. Step 5: Solve for x
    x = 308,823,843.38/25,761.34
  6. Step 6: Final answer
    x = 11,987.88

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1.5x scale

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.