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Finding the Fourth Proportional to 17,977.30, 26,956.20 and 8,105.02

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Solution

The fourth proportional to 17,977.30, 26,956.20 and 8,105.02 is: 12,153.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,977.30 : 26,956.20 = 8,105.02 : x
  2. Step 2: Convert to fraction form
    17,977.30/26,956.20 = 8,105.02/x
  3. Step 3: Cross multiply
    17,977.30x = 26,956.20 × 8,105.02
  4. Step 4: Simplify right side
    17,977.30x = 218,480,540.12
  5. Step 5: Solve for x
    x = 218,480,540.12/17,977.30
  6. Step 6: Final answer
    x = 12,153.13

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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.