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Finding the Fourth Proportional to 18,662.40, 27,988.74 and 6,183.54

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Solution

The fourth proportional to 18,662.40, 27,988.74 and 6,183.54 is: 9,273.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,662.40 : 27,988.74 = 6,183.54 : x
  2. Step 2: Convert to fraction form
    18,662.40/27,988.74 = 6,183.54/x
  3. Step 3: Cross multiply
    18,662.40x = 27,988.74 × 6,183.54
  4. Step 4: Simplify right side
    18,662.40x = 173,069,493.34
  5. Step 5: Solve for x
    x = 173,069,493.34/18,662.40
  6. Step 6: Final answer
    x = 9,273.70

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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.