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Finding the Fourth Proportional to 18,309, 27,447.21 and 6,619.62

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Solution

The fourth proportional to 18,309, 27,447.21 and 6,619.62 is: 9,923.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,309 : 27,447.21 = 6,619.62 : x
  2. Step 2: Convert to fraction form
    18,309/27,447.21 = 6,619.62/x
  3. Step 3: Cross multiply
    18,309x = 27,447.21 × 6,619.62
  4. Step 4: Simplify right side
    18,309x = 181,690,100.26
  5. Step 5: Solve for x
    x = 181,690,100.26/18,309
  6. Step 6: Final answer
    x = 9,923.54

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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.