Home / 20,101.12-27,739.52-11,149.98

Finding the Fourth Proportional to 20,101.12, 27,739.52 and 11,149.98

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Solution

The fourth proportional to 20,101.12, 27,739.52 and 11,149.98 is: 15,386.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,101.12 : 27,739.52 = 11,149.98 : x
  2. Step 2: Convert to fraction form
    20,101.12/27,739.52 = 11,149.98/x
  3. Step 3: Cross multiply
    20,101.12x = 27,739.52 × 11,149.98
  4. Step 4: Simplify right side
    20,101.12x = 309,295,093.21
  5. Step 5: Solve for x
    x = 309,295,093.21/20,101.12
  6. Step 6: Final answer
    x = 15,386.96

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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.