Home / 11,772.28-17,657.88-3,981.16

Finding the Fourth Proportional to 11,772.28, 17,657.88 and 3,981.16

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Solution

The fourth proportional to 11,772.28, 17,657.88 and 3,981.16 is: 5,971.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,772.28 : 17,657.88 = 3,981.16 : x
  2. Step 2: Convert to fraction form
    11,772.28/17,657.88 = 3,981.16/x
  3. Step 3: Cross multiply
    11,772.28x = 17,657.88 × 3,981.16
  4. Step 4: Simplify right side
    11,772.28x = 70,298,845.54
  5. Step 5: Solve for x
    x = 70,298,845.54/11,772.28
  6. Step 6: Final answer
    x = 5,971.56

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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.