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Finding the Fourth Proportional to 11,644.81, 17,413.56 and 8,648.51

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Solution

The fourth proportional to 11,644.81, 17,413.56 and 8,648.51 is: 12,932.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,644.81 : 17,413.56 = 8,648.51 : x
  2. Step 2: Convert to fraction form
    11,644.81/17,413.56 = 8,648.51/x
  3. Step 3: Cross multiply
    11,644.81x = 17,413.56 × 8,648.51
  4. Step 4: Simplify right side
    11,644.81x = 150,601,260.73
  5. Step 5: Solve for x
    x = 150,601,260.73/11,644.81
  6. Step 6: Final answer
    x = 12,932.91

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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.