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Finding the Fourth Proportional to 25,691.37, 38,540.66 and 7,923.45

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Solution

The fourth proportional to 25,691.37, 38,540.66 and 7,923.45 is: 11,886.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,691.37 : 38,540.66 = 7,923.45 : x
  2. Step 2: Convert to fraction form
    25,691.37/38,540.66 = 7,923.45/x
  3. Step 3: Cross multiply
    25,691.37x = 38,540.66 × 7,923.45
  4. Step 4: Simplify right side
    25,691.37x = 305,374,992.48
  5. Step 5: Solve for x
    x = 305,374,992.48/25,691.37
  6. Step 6: Final answer
    x = 11,886.29

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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.