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Finding the Fourth Proportional to 12,744.87, 17,584.05 and 7,708.69

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Solution

The fourth proportional to 12,744.87, 17,584.05 and 7,708.69 is: 10,635.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,744.87 : 17,584.05 = 7,708.69 : x
  2. Step 2: Convert to fraction form
    12,744.87/17,584.05 = 7,708.69/x
  3. Step 3: Cross multiply
    12,744.87x = 17,584.05 × 7,708.69
  4. Step 4: Simplify right side
    12,744.87x = 135,549,990.39
  5. Step 5: Solve for x
    x = 135,549,990.39/12,744.87
  6. Step 6: Final answer
    x = 10,635.65

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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.