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Finding the Fourth Proportional to 18,384.91, 27,553.14 and 7,285.55

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Solution

The fourth proportional to 18,384.91, 27,553.14 and 7,285.55 is: 10,918.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,384.91 : 27,553.14 = 7,285.55 : x
  2. Step 2: Convert to fraction form
    18,384.91/27,553.14 = 7,285.55/x
  3. Step 3: Cross multiply
    18,384.91x = 27,553.14 × 7,285.55
  4. Step 4: Simplify right side
    18,384.91x = 200,739,604.93
  5. Step 5: Solve for x
    x = 200,739,604.93/18,384.91
  6. Step 6: Final answer
    x = 10,918.72

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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.