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Finding the Fourth Proportional to 18,143.74, 27,082.97 and 16,808.20

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Solution

The fourth proportional to 18,143.74, 27,082.97 and 16,808.20 is: 25,089.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,143.74 : 27,082.97 = 16,808.20 : x
  2. Step 2: Convert to fraction form
    18,143.74/27,082.97 = 16,808.20/x
  3. Step 3: Cross multiply
    18,143.74x = 27,082.97 × 16,808.20
  4. Step 4: Simplify right side
    18,143.74x = 455,215,976.35
  5. Step 5: Solve for x
    x = 455,215,976.35/18,143.74
  6. Step 6: Final answer
    x = 25,089.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.