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Finding the Fourth Proportional to 12,450.98, 18,683.76 and 6,908.96

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Solution

The fourth proportional to 12,450.98, 18,683.76 and 6,908.96 is: 10,367.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,450.98 : 18,683.76 = 6,908.96 : x
  2. Step 2: Convert to fraction form
    12,450.98/18,683.76 = 6,908.96/x
  3. Step 3: Cross multiply
    12,450.98x = 18,683.76 × 6,908.96
  4. Step 4: Simplify right side
    12,450.98x = 129,085,350.49
  5. Step 5: Solve for x
    x = 129,085,350.49/12,450.98
  6. Step 6: Final answer
    x = 10,367.49

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Half scale
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Similar ratio
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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.