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Finding the Fourth Proportional to 25,196.78, 37,788.41 and 7,661.90

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Solution

The fourth proportional to 25,196.78, 37,788.41 and 7,661.90 is: 11,490.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,196.78 : 37,788.41 = 7,661.90 : x
  2. Step 2: Convert to fraction form
    25,196.78/37,788.41 = 7,661.90/x
  3. Step 3: Cross multiply
    25,196.78x = 37,788.41 × 7,661.90
  4. Step 4: Simplify right side
    25,196.78x = 289,530,791.33
  5. Step 5: Solve for x
    x = 289,530,791.33/25,196.78
  6. Step 6: Final answer
    x = 11,490.79

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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.