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Finding the Fourth Proportional to 18,107.60, 27,161.42 and 4,960.08

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Solution

The fourth proportional to 18,107.60, 27,161.42 and 4,960.08 is: 7,440.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,107.60 : 27,161.42 = 4,960.08 : x
  2. Step 2: Convert to fraction form
    18,107.60/27,161.42 = 4,960.08/x
  3. Step 3: Cross multiply
    18,107.60x = 27,161.42 × 4,960.08
  4. Step 4: Simplify right side
    18,107.60x = 134,722,816.11
  5. Step 5: Solve for x
    x = 134,722,816.11/18,107.60
  6. Step 6: Final answer
    x = 7,440.13

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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.