Home / 10,640.81-15,963.27-3,620.54

Finding the Fourth Proportional to 10,640.81, 15,963.27 and 3,620.54

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Solution

The fourth proportional to 10,640.81, 15,963.27 and 3,620.54 is: 5,431.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,640.81 : 15,963.27 = 3,620.54 : x
  2. Step 2: Convert to fraction form
    10,640.81/15,963.27 = 3,620.54/x
  3. Step 3: Cross multiply
    10,640.81x = 15,963.27 × 3,620.54
  4. Step 4: Simplify right side
    10,640.81x = 57,795,657.57
  5. Step 5: Solve for x
    x = 57,795,657.57/10,640.81
  6. Step 6: Final answer
    x = 5,431.51

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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.