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Finding the Fourth Proportional to 18,490.80, 27,739.92 and 6,804.08

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Solution

The fourth proportional to 18,490.80, 27,739.92 and 6,804.08 is: 10,207.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,490.80 : 27,739.92 = 6,804.08 : x
  2. Step 2: Convert to fraction form
    18,490.80/27,739.92 = 6,804.08/x
  3. Step 3: Cross multiply
    18,490.80x = 27,739.92 × 6,804.08
  4. Step 4: Simplify right side
    18,490.80x = 188,744,634.87
  5. Step 5: Solve for x
    x = 188,744,634.87/18,490.80
  6. Step 6: Final answer
    x = 10,207.49

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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.