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Finding the Fourth Proportional to 12,660.69, 17,472.42 and 7,626.49

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Solution

The fourth proportional to 12,660.69, 17,472.42 and 7,626.49 is: 10,524.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,660.69 : 17,472.42 = 7,626.49 : x
  2. Step 2: Convert to fraction form
    12,660.69/17,472.42 = 7,626.49/x
  3. Step 3: Cross multiply
    12,660.69x = 17,472.42 × 7,626.49
  4. Step 4: Simplify right side
    12,660.69x = 133,253,236.41
  5. Step 5: Solve for x
    x = 133,253,236.41/12,660.69
  6. Step 6: Final answer
    x = 10,524.96

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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.