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Finding the Fourth Proportional to 18,672.32, 27,993.36 and 6,983.84

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Solution

The fourth proportional to 18,672.32, 27,993.36 and 6,983.84 is: 10,470.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672.32 : 27,993.36 = 6,983.84 : x
  2. Step 2: Convert to fraction form
    18,672.32/27,993.36 = 6,983.84/x
  3. Step 3: Cross multiply
    18,672.32x = 27,993.36 × 6,983.84
  4. Step 4: Simplify right side
    18,672.32x = 195,501,147.30
  5. Step 5: Solve for x
    x = 195,501,147.30/18,672.32
  6. Step 6: Final answer
    x = 10,470.10

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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.