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Finding the Fourth Proportional to 18,381.99, 27,553.68 and 9,009.03

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Solution

The fourth proportional to 18,381.99, 27,553.68 and 9,009.03 is: 13,504.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,381.99 : 27,553.68 = 9,009.03 : x
  2. Step 2: Convert to fraction form
    18,381.99/27,553.68 = 9,009.03/x
  3. Step 3: Cross multiply
    18,381.99x = 27,553.68 × 9,009.03
  4. Step 4: Simplify right side
    18,381.99x = 248,231,929.73
  5. Step 5: Solve for x
    x = 248,231,929.73/18,381.99
  6. Step 6: Final answer
    x = 13,504.08

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Half scale
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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.