Home / 15,137.28-20,887.04-8,512

Finding the Fourth Proportional to 15,137.28, 20,887.04 and 8,512

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Solution

The fourth proportional to 15,137.28, 20,887.04 and 8,512 is: 11,745.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,137.28 : 20,887.04 = 8,512 : x
  2. Step 2: Convert to fraction form
    15,137.28/20,887.04 = 8,512/x
  3. Step 3: Cross multiply
    15,137.28x = 20,887.04 × 8,512
  4. Step 4: Simplify right side
    15,137.28x = 177,790,484.48
  5. Step 5: Solve for x
    x = 177,790,484.48/15,137.28
  6. Step 6: Final answer
    x = 11,745.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.