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Finding the Fourth Proportional to 18,600.80, 27,898.11 and 6,120.98

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Solution

The fourth proportional to 18,600.80, 27,898.11 and 6,120.98 is: 9,180.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,600.80 : 27,898.11 = 6,120.98 : x
  2. Step 2: Convert to fraction form
    18,600.80/27,898.11 = 6,120.98/x
  3. Step 3: Cross multiply
    18,600.80x = 27,898.11 × 6,120.98
  4. Step 4: Simplify right side
    18,600.80x = 170,763,773.35
  5. Step 5: Solve for x
    x = 170,763,773.35/18,600.80
  6. Step 6: Final answer
    x = 9,180.45

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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.