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Finding the Fourth Proportional to 18,189.64, 27,284.41 and 5,709.62

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Solution

The fourth proportional to 18,189.64, 27,284.41 and 5,709.62 is: 8,564.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,189.64 : 27,284.41 = 5,709.62 : x
  2. Step 2: Convert to fraction form
    18,189.64/27,284.41 = 5,709.62/x
  3. Step 3: Cross multiply
    18,189.64x = 27,284.41 × 5,709.62
  4. Step 4: Simplify right side
    18,189.64x = 155,783,688.37
  5. Step 5: Solve for x
    x = 155,783,688.37/18,189.64
  6. Step 6: Final answer
    x = 8,564.42

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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.