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Finding the Fourth Proportional to 12,745.54, 17,591.88 and 8,503.30

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Solution

The fourth proportional to 12,745.54, 17,591.88 and 8,503.30 is: 11,736.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,745.54 : 17,591.88 = 8,503.30 : x
  2. Step 2: Convert to fraction form
    12,745.54/17,591.88 = 8,503.30/x
  3. Step 3: Cross multiply
    12,745.54x = 17,591.88 × 8,503.30
  4. Step 4: Simplify right side
    12,745.54x = 149,589,033.20
  5. Step 5: Solve for x
    x = 149,589,033.20/12,745.54
  6. Step 6: Final answer
    x = 11,736.58

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1.5x scale

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.