Home / 11,812.73-17,720.97-3,915.52

Finding the Fourth Proportional to 11,812.73, 17,720.97 and 3,915.52

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Solution

The fourth proportional to 11,812.73, 17,720.97 and 3,915.52 is: 5,873.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,812.73 : 17,720.97 = 3,915.52 : x
  2. Step 2: Convert to fraction form
    11,812.73/17,720.97 = 3,915.52/x
  3. Step 3: Cross multiply
    11,812.73x = 17,720.97 × 3,915.52
  4. Step 4: Simplify right side
    11,812.73x = 69,386,768.15
  5. Step 5: Solve for x
    x = 69,386,768.15/11,812.73
  6. Step 6: Final answer
    x = 5,873.90

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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.