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Finding the Fourth Proportional to 18,213.11, 27,324.36 and 9,890.99

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Solution

The fourth proportional to 18,213.11, 27,324.36 and 9,890.99 is: 14,839.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,213.11 : 27,324.36 = 9,890.99 : x
  2. Step 2: Convert to fraction form
    18,213.11/27,324.36 = 9,890.99/x
  3. Step 3: Cross multiply
    18,213.11x = 27,324.36 × 9,890.99
  4. Step 4: Simplify right side
    18,213.11x = 270,264,971.52
  5. Step 5: Solve for x
    x = 270,264,971.52/18,213.11
  6. Step 6: Final answer
    x = 14,839.03

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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.