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Finding the Fourth Proportional to 18,501.17, 27,759.04 and 8,105.63

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Solution

The fourth proportional to 18,501.17, 27,759.04 and 8,105.63 is: 12,161.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,501.17 : 27,759.04 = 8,105.63 : x
  2. Step 2: Convert to fraction form
    18,501.17/27,759.04 = 8,105.63/x
  3. Step 3: Cross multiply
    18,501.17x = 27,759.04 × 8,105.63
  4. Step 4: Simplify right side
    18,501.17x = 225,004,348.34
  5. Step 5: Solve for x
    x = 225,004,348.34/18,501.17
  6. Step 6: Final answer
    x = 12,161.63

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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.