Home / 20,103.66-27,745.07-11,152.90

Finding the Fourth Proportional to 20,103.66, 27,745.07 and 11,152.90

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Solution

The fourth proportional to 20,103.66, 27,745.07 and 11,152.90 is: 15,392.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.66 : 27,745.07 = 11,152.90 : x
  2. Step 2: Convert to fraction form
    20,103.66/27,745.07 = 11,152.90/x
  3. Step 3: Cross multiply
    20,103.66x = 27,745.07 × 11,152.90
  4. Step 4: Simplify right side
    20,103.66x = 309,437,991.20
  5. Step 5: Solve for x
    x = 309,437,991.20/20,103.66
  6. Step 6: Final answer
    x = 15,392.12

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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.