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Finding the Fourth Proportional to 18,331.25, 27,496.88 and 6,644.48

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Solution

The fourth proportional to 18,331.25, 27,496.88 and 6,644.48 is: 9,966.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,331.25 : 27,496.88 = 6,644.48 : x
  2. Step 2: Convert to fraction form
    18,331.25/27,496.88 = 6,644.48/x
  3. Step 3: Cross multiply
    18,331.25x = 27,496.88 × 6,644.48
  4. Step 4: Simplify right side
    18,331.25x = 182,702,436
  5. Step 5: Solve for x
    x = 182,702,436/18,331.25
  6. Step 6: Final answer
    x = 9,966.72

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Double 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.