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Finding the Fourth Proportional to 18,556.98, 27,840.10 and 5,409.48

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Solution

The fourth proportional to 18,556.98, 27,840.10 and 5,409.48 is: 8,115.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,556.98 : 27,840.10 = 5,409.48 : x
  2. Step 2: Convert to fraction form
    18,556.98/27,840.10 = 5,409.48/x
  3. Step 3: Cross multiply
    18,556.98x = 27,840.10 × 5,409.48
  4. Step 4: Simplify right side
    18,556.98x = 150,600,464.15
  5. Step 5: Solve for x
    x = 150,600,464.15/18,556.98
  6. Step 6: Final answer
    x = 8,115.57

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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.