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Finding the Fourth Proportional to 36,989.64, 55,479 and 13,610.64

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Solution

The fourth proportional to 36,989.64, 55,479 and 13,610.64 is: 20,413.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,989.64 : 55,479 = 13,610.64 : x
  2. Step 2: Convert to fraction form
    36,989.64/55,479 = 13,610.64/x
  3. Step 3: Cross multiply
    36,989.64x = 55,479 × 13,610.64
  4. Step 4: Simplify right side
    36,989.64x = 755,104,696.56
  5. Step 5: Solve for x
    x = 755,104,696.56/36,989.64
  6. Step 6: Final answer
    x = 20,413.95

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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.