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Finding the Fourth Proportional to 18,138.32, 27,194.72 and 7,035.65

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Solution

The fourth proportional to 18,138.32, 27,194.72 and 7,035.65 is: 10,548.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,138.32 : 27,194.72 = 7,035.65 : x
  2. Step 2: Convert to fraction form
    18,138.32/27,194.72 = 7,035.65/x
  3. Step 3: Cross multiply
    18,138.32x = 27,194.72 × 7,035.65
  4. Step 4: Simplify right side
    18,138.32x = 191,332,531.77
  5. Step 5: Solve for x
    x = 191,332,531.77/18,138.32
  6. Step 6: Final answer
    x = 10,548.53

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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.