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Finding the Fourth Proportional to 20,600.73, 30,890.06 and 6,556.95

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Solution

The fourth proportional to 20,600.73, 30,890.06 and 6,556.95 is: 9,831.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,600.73 : 30,890.06 = 6,556.95 : x
  2. Step 2: Convert to fraction form
    20,600.73/30,890.06 = 6,556.95/x
  3. Step 3: Cross multiply
    20,600.73x = 30,890.06 × 6,556.95
  4. Step 4: Simplify right side
    20,600.73x = 202,544,570.72
  5. Step 5: Solve for x
    x = 202,544,570.72/20,600.73
  6. Step 6: Final answer
    x = 9,831.91

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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.