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Finding the Fourth Proportional to 20,104.37, 27,745.37 and 11,152.25

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Solution

The fourth proportional to 20,104.37, 27,745.37 and 11,152.25 is: 15,390.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,104.37 : 27,745.37 = 11,152.25 : x
  2. Step 2: Convert to fraction form
    20,104.37/27,745.37 = 11,152.25/x
  3. Step 3: Cross multiply
    20,104.37x = 27,745.37 × 11,152.25
  4. Step 4: Simplify right side
    20,104.37x = 309,423,108.09
  5. Step 5: Solve for x
    x = 309,423,108.09/20,104.37
  6. Step 6: Final answer
    x = 15,390.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.