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Finding the Fourth Proportional to 9,138.76, 13,693.79 and 7,063.85

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Solution

The fourth proportional to 9,138.76, 13,693.79 and 7,063.85 is: 10,584.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,138.76 : 13,693.79 = 7,063.85 : x
  2. Step 2: Convert to fraction form
    9,138.76/13,693.79 = 7,063.85/x
  3. Step 3: Cross multiply
    9,138.76x = 13,693.79 × 7,063.85
  4. Step 4: Simplify right side
    9,138.76x = 96,730,930.39
  5. Step 5: Solve for x
    x = 96,730,930.39/9,138.76
  6. Step 6: Final answer
    x = 10,584.69

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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.