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Finding the Fourth Proportional to 18,389.57, 27,560.03 and 6,691.55

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Solution

The fourth proportional to 18,389.57, 27,560.03 and 6,691.55 is: 10,028.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,389.57 : 27,560.03 = 6,691.55 : x
  2. Step 2: Convert to fraction form
    18,389.57/27,560.03 = 6,691.55/x
  3. Step 3: Cross multiply
    18,389.57x = 27,560.03 × 6,691.55
  4. Step 4: Simplify right side
    18,389.57x = 184,419,147.49
  5. Step 5: Solve for x
    x = 184,419,147.49/18,389.57
  6. Step 6: Final answer
    x = 10,028.47

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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.