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Finding the Fourth Proportional to 12,268.70, 16,930.81 and 6,679.70

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Solution

The fourth proportional to 12,268.70, 16,930.81 and 6,679.70 is: 9,217.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,268.70 : 16,930.81 = 6,679.70 : x
  2. Step 2: Convert to fraction form
    12,268.70/16,930.81 = 6,679.70/x
  3. Step 3: Cross multiply
    12,268.70x = 16,930.81 × 6,679.70
  4. Step 4: Simplify right side
    12,268.70x = 113,092,731.56
  5. Step 5: Solve for x
    x = 113,092,731.56/12,268.70
  6. Step 6: Final answer
    x = 9,217.99

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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.