Home / 20,108.26-27,745.26-11,153.84

Finding the Fourth Proportional to 20,108.26, 27,745.26 and 11,153.84

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Solution

The fourth proportional to 20,108.26, 27,745.26 and 11,153.84 is: 15,390.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.26 : 27,745.26 = 11,153.84 : x
  2. Step 2: Convert to fraction form
    20,108.26/27,745.26 = 11,153.84/x
  3. Step 3: Cross multiply
    20,108.26x = 27,745.26 × 11,153.84
  4. Step 4: Simplify right side
    20,108.26x = 309,466,190.80
  5. Step 5: Solve for x
    x = 309,466,190.80/20,108.26
  6. Step 6: Final answer
    x = 15,390.00

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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.