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Finding the Fourth Proportional to 9,906.20, 13,676.76 and 6,375.54

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Solution

The fourth proportional to 9,906.20, 13,676.76 and 6,375.54 is: 8,802.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,906.20 : 13,676.76 = 6,375.54 : x
  2. Step 2: Convert to fraction form
    9,906.20/13,676.76 = 6,375.54/x
  3. Step 3: Cross multiply
    9,906.20x = 13,676.76 × 6,375.54
  4. Step 4: Simplify right side
    9,906.20x = 87,196,730.45
  5. Step 5: Solve for x
    x = 87,196,730.45/9,906.20
  6. Step 6: Final answer
    x = 8,802.24

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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.