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Finding the Fourth Proportional to 19,243.86, 28,865.03 and 6,766.71

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Solution

The fourth proportional to 19,243.86, 28,865.03 and 6,766.71 is: 10,149.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,243.86 : 28,865.03 = 6,766.71 : x
  2. Step 2: Convert to fraction form
    19,243.86/28,865.03 = 6,766.71/x
  3. Step 3: Cross multiply
    19,243.86x = 28,865.03 × 6,766.71
  4. Step 4: Simplify right side
    19,243.86x = 195,321,253.32
  5. Step 5: Solve for x
    x = 195,321,253.32/19,243.86
  6. Step 6: Final answer
    x = 10,149.80

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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.