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Finding the Fourth Proportional to 11,138.72, 16,708.10 and 4,563.72

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Solution

The fourth proportional to 11,138.72, 16,708.10 and 4,563.72 is: 6,845.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.72 : 16,708.10 = 4,563.72 : x
  2. Step 2: Convert to fraction form
    11,138.72/16,708.10 = 4,563.72/x
  3. Step 3: Cross multiply
    11,138.72x = 16,708.10 × 4,563.72
  4. Step 4: Simplify right side
    11,138.72x = 76,251,067.31
  5. Step 5: Solve for x
    x = 76,251,067.31/11,138.72
  6. Step 6: Final answer
    x = 6,845.59

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1.5x scale

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.