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Finding the Fourth Proportional to 18,338.56, 27,503.72 and 8,476.42

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Solution

The fourth proportional to 18,338.56, 27,503.72 and 8,476.42 is: 12,712.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,338.56 : 27,503.72 = 8,476.42 : x
  2. Step 2: Convert to fraction form
    18,338.56/27,503.72 = 8,476.42/x
  3. Step 3: Cross multiply
    18,338.56x = 27,503.72 × 8,476.42
  4. Step 4: Simplify right side
    18,338.56x = 233,133,082.28
  5. Step 5: Solve for x
    x = 233,133,082.28/18,338.56
  6. Step 6: Final answer
    x = 12,712.73

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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.