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Finding the Fourth Proportional to 18,407.82, 27,612.48 and 5,081.91

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Solution

The fourth proportional to 18,407.82, 27,612.48 and 5,081.91 is: 7,623.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,407.82 : 27,612.48 = 5,081.91 : x
  2. Step 2: Convert to fraction form
    18,407.82/27,612.48 = 5,081.91/x
  3. Step 3: Cross multiply
    18,407.82x = 27,612.48 × 5,081.91
  4. Step 4: Simplify right side
    18,407.82x = 140,324,138.24
  5. Step 5: Solve for x
    x = 140,324,138.24/18,407.82
  6. Step 6: Final answer
    x = 7,623.07

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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.