Home / 10,639.61-15,961.32-3,619.27

Finding the Fourth Proportional to 10,639.61, 15,961.32 and 3,619.27

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Solution

The fourth proportional to 10,639.61, 15,961.32 and 3,619.27 is: 5,429.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,639.61 : 15,961.32 = 3,619.27 : x
  2. Step 2: Convert to fraction form
    10,639.61/15,961.32 = 3,619.27/x
  3. Step 3: Cross multiply
    10,639.61x = 15,961.32 × 3,619.27
  4. Step 4: Simplify right side
    10,639.61x = 57,768,286.73
  5. Step 5: Solve for x
    x = 57,768,286.73/10,639.61
  6. Step 6: Final answer
    x = 5,429.55

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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.