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Finding the Fourth Proportional to 15,107.78, 20,846.22 and 8,734.97

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Solution

The fourth proportional to 15,107.78, 20,846.22 and 8,734.97 is: 12,052.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,107.78 : 20,846.22 = 8,734.97 : x
  2. Step 2: Convert to fraction form
    15,107.78/20,846.22 = 8,734.97/x
  3. Step 3: Cross multiply
    15,107.78x = 20,846.22 × 8,734.97
  4. Step 4: Simplify right side
    15,107.78x = 182,091,002.08
  5. Step 5: Solve for x
    x = 182,091,002.08/15,107.78
  6. Step 6: Final answer
    x = 12,052.80

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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.