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Finding the Fourth Proportional to 18,665.08, 27,960.08 and 9,276.70

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Solution

The fourth proportional to 18,665.08, 27,960.08 and 9,276.70 is: 13,896.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,665.08 : 27,960.08 = 9,276.70 : x
  2. Step 2: Convert to fraction form
    18,665.08/27,960.08 = 9,276.70/x
  3. Step 3: Cross multiply
    18,665.08x = 27,960.08 × 9,276.70
  4. Step 4: Simplify right side
    18,665.08x = 259,377,274.14
  5. Step 5: Solve for x
    x = 259,377,274.14/18,665.08
  6. Step 6: Final answer
    x = 13,896.39

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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.