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Finding the Fourth Proportional to 18,207.51, 27,311.94 and 6,520.71

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Solution

The fourth proportional to 18,207.51, 27,311.94 and 6,520.71 is: 9,781.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,207.51 : 27,311.94 = 6,520.71 : x
  2. Step 2: Convert to fraction form
    18,207.51/27,311.94 = 6,520.71/x
  3. Step 3: Cross multiply
    18,207.51x = 27,311.94 × 6,520.71
  4. Step 4: Simplify right side
    18,207.51x = 178,093,240.28
  5. Step 5: Solve for x
    x = 178,093,240.28/18,207.51
  6. Step 6: Final answer
    x = 9,781.31

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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.