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Finding the Fourth Proportional to 18,600.81, 27,900.85 and 5,452.89

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Solution

The fourth proportional to 18,600.81, 27,900.85 and 5,452.89 is: 8,179.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,600.81 : 27,900.85 = 5,452.89 : x
  2. Step 2: Convert to fraction form
    18,600.81/27,900.85 = 5,452.89/x
  3. Step 3: Cross multiply
    18,600.81x = 27,900.85 × 5,452.89
  4. Step 4: Simplify right side
    18,600.81x = 152,140,265.96
  5. Step 5: Solve for x
    x = 152,140,265.96/18,600.81
  6. Step 6: Final answer
    x = 8,179.23

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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.