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Finding the Fourth Proportional to 9,211.68, 13,829.06 and 7,385.54

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Solution

The fourth proportional to 9,211.68, 13,829.06 and 7,385.54 is: 11,087.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,211.68 : 13,829.06 = 7,385.54 : x
  2. Step 2: Convert to fraction form
    9,211.68/13,829.06 = 7,385.54/x
  3. Step 3: Cross multiply
    9,211.68x = 13,829.06 × 7,385.54
  4. Step 4: Simplify right side
    9,211.68x = 102,135,025.11
  5. Step 5: Solve for x
    x = 102,135,025.11/9,211.68
  6. Step 6: Final answer
    x = 11,087.56

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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.