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Finding the Fourth Proportional to 11,147.58, 15,375.96 and 7,604.64

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Solution

The fourth proportional to 11,147.58, 15,375.96 and 7,604.64 is: 10,489.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,147.58 : 15,375.96 = 7,604.64 : x
  2. Step 2: Convert to fraction form
    11,147.58/15,375.96 = 7,604.64/x
  3. Step 3: Cross multiply
    11,147.58x = 15,375.96 × 7,604.64
  4. Step 4: Simplify right side
    11,147.58x = 116,928,640.45
  5. Step 5: Solve for x
    x = 116,928,640.45/11,147.58
  6. Step 6: Final answer
    x = 10,489.15

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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.