Home / 13,431.32-20,146.97-3,570.61

Finding the Fourth Proportional to 13,431.32, 20,146.97 and 3,570.61

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Solution

The fourth proportional to 13,431.32, 20,146.97 and 3,570.61 is: 5,355.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431.32 : 20,146.97 = 3,570.61 : x
  2. Step 2: Convert to fraction form
    13,431.32/20,146.97 = 3,570.61/x
  3. Step 3: Cross multiply
    13,431.32x = 20,146.97 × 3,570.61
  4. Step 4: Simplify right side
    13,431.32x = 71,936,904.33
  5. Step 5: Solve for x
    x = 71,936,904.33/13,431.32
  6. Step 6: Final answer
    x = 5,355.91

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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.