Home / 11,694.54-16,138.20-6,389.38

Finding the Fourth Proportional to 11,694.54, 16,138.20 and 6,389.38

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Solution

The fourth proportional to 11,694.54, 16,138.20 and 6,389.38 is: 8,817.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,694.54 : 16,138.20 = 6,389.38 : x
  2. Step 2: Convert to fraction form
    11,694.54/16,138.20 = 6,389.38/x
  3. Step 3: Cross multiply
    11,694.54x = 16,138.20 × 6,389.38
  4. Step 4: Simplify right side
    11,694.54x = 103,113,092.32
  5. Step 5: Solve for x
    x = 103,113,092.32/11,694.54
  6. Step 6: Final answer
    x = 8,817.20

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Double scale
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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.