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Finding the Fourth Proportional to 20,235.78, 27,926.07 and 11,737.68

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Solution

The fourth proportional to 20,235.78, 27,926.07 and 11,737.68 is: 16,198.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,235.78 : 27,926.07 = 11,737.68 : x
  2. Step 2: Convert to fraction form
    20,235.78/27,926.07 = 11,737.68/x
  3. Step 3: Cross multiply
    20,235.78x = 27,926.07 × 11,737.68
  4. Step 4: Simplify right side
    20,235.78x = 327,787,273.32
  5. Step 5: Solve for x
    x = 327,787,273.32/20,235.78
  6. Step 6: Final answer
    x = 16,198.40

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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.