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Finding the Fourth Proportional to 17,983.56, 26,991.97 and 9,105.13

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Solution

The fourth proportional to 17,983.56, 26,991.97 and 9,105.13 is: 13,666.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,983.56 : 26,991.97 = 9,105.13 : x
  2. Step 2: Convert to fraction form
    17,983.56/26,991.97 = 9,105.13/x
  3. Step 3: Cross multiply
    17,983.56x = 26,991.97 × 9,105.13
  4. Step 4: Simplify right side
    17,983.56x = 245,765,260.85
  5. Step 5: Solve for x
    x = 245,765,260.85/17,983.56
  6. Step 6: Final answer
    x = 13,666.11

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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.