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Finding the Fourth Proportional to 18,619.08, 27,923.22 and 5,469

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Solution

The fourth proportional to 18,619.08, 27,923.22 and 5,469 is: 8,201.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,619.08 : 27,923.22 = 5,469 : x
  2. Step 2: Convert to fraction form
    18,619.08/27,923.22 = 5,469/x
  3. Step 3: Cross multiply
    18,619.08x = 27,923.22 × 5,469
  4. Step 4: Simplify right side
    18,619.08x = 152,712,090.18
  5. Step 5: Solve for x
    x = 152,712,090.18/18,619.08
  6. Step 6: Final answer
    x = 8,201.91

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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.