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Finding the Fourth Proportional to 18,003.77, 27,007.53 and 6,919.73

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Solution

The fourth proportional to 18,003.77, 27,007.53 and 6,919.73 is: 10,380.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,003.77 : 27,007.53 = 6,919.73 : x
  2. Step 2: Convert to fraction form
    18,003.77/27,007.53 = 6,919.73/x
  3. Step 3: Cross multiply
    18,003.77x = 27,007.53 × 6,919.73
  4. Step 4: Simplify right side
    18,003.77x = 186,884,755.86
  5. Step 5: Solve for x
    x = 186,884,755.86/18,003.77
  6. Step 6: Final answer
    x = 10,380.31

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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.