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Finding the Fourth Proportional to 18,485.36, 27,739.02 and 6,806.78

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Solution

The fourth proportional to 18,485.36, 27,739.02 and 6,806.78 is: 10,214.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,485.36 : 27,739.02 = 6,806.78 : x
  2. Step 2: Convert to fraction form
    18,485.36/27,739.02 = 6,806.78/x
  3. Step 3: Cross multiply
    18,485.36x = 27,739.02 × 6,806.78
  4. Step 4: Simplify right side
    18,485.36x = 188,813,406.56
  5. Step 5: Solve for x
    x = 188,813,406.56/18,485.36
  6. Step 6: Final answer
    x = 10,214.21

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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.