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Finding the Fourth Proportional to 15,137.52, 20,891.16 and 8,850.84

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Solution

The fourth proportional to 15,137.52, 20,891.16 and 8,850.84 is: 12,214.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,137.52 : 20,891.16 = 8,850.84 : x
  2. Step 2: Convert to fraction form
    15,137.52/20,891.16 = 8,850.84/x
  3. Step 3: Cross multiply
    15,137.52x = 20,891.16 × 8,850.84
  4. Step 4: Simplify right side
    15,137.52x = 184,904,314.57
  5. Step 5: Solve for x
    x = 184,904,314.57/15,137.52
  6. Step 6: Final answer
    x = 12,214.97

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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.