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Finding the Fourth Proportional to 36,687.76, 54,989.04 and 15,621.14

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Solution

The fourth proportional to 36,687.76, 54,989.04 and 15,621.14 is: 23,413.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,687.76 : 54,989.04 = 15,621.14 : x
  2. Step 2: Convert to fraction form
    36,687.76/54,989.04 = 15,621.14/x
  3. Step 3: Cross multiply
    36,687.76x = 54,989.04 × 15,621.14
  4. Step 4: Simplify right side
    36,687.76x = 858,991,492.31
  5. Step 5: Solve for x
    x = 858,991,492.31/36,687.76
  6. Step 6: Final answer
    x = 23,413.57

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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.