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Finding the Fourth Proportional to 25,761.63, 38,644.81 and 7,992.42

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Solution

The fourth proportional to 25,761.63, 38,644.81 and 7,992.42 is: 11,989.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,761.63 : 38,644.81 = 7,992.42 : x
  2. Step 2: Convert to fraction form
    25,761.63/38,644.81 = 7,992.42/x
  3. Step 3: Cross multiply
    25,761.63x = 38,644.81 × 7,992.42
  4. Step 4: Simplify right side
    25,761.63x = 308,865,512.38
  5. Step 5: Solve for x
    x = 308,865,512.38/25,761.63
  6. Step 6: Final answer
    x = 11,989.36

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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.