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Finding the Fourth Proportional to 18,003.74, 27,007.43 and 6,919.83

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Solution

The fourth proportional to 18,003.74, 27,007.43 and 6,919.83 is: 10,380.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,003.74 : 27,007.43 = 6,919.83 : x
  2. Step 2: Convert to fraction form
    18,003.74/27,007.43 = 6,919.83/x
  3. Step 3: Cross multiply
    18,003.74x = 27,007.43 × 6,919.83
  4. Step 4: Simplify right side
    18,003.74x = 186,886,789.74
  5. Step 5: Solve for x
    x = 186,886,789.74/18,003.74
  6. Step 6: Final answer
    x = 10,380.45

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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.