Home / 20,090.94-27,725.00-11,138.42

Finding the Fourth Proportional to 20,090.94, 27,725.00 and 11,138.42

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Solution

The fourth proportional to 20,090.94, 27,725.00 and 11,138.42 is: 15,370.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.94 : 27,725.00 = 11,138.42 : x
  2. Step 2: Convert to fraction form
    20,090.94/27,725.00 = 11,138.42/x
  3. Step 3: Cross multiply
    20,090.94x = 27,725.00 × 11,138.42
  4. Step 4: Simplify right side
    20,090.94x = 308,812,500.18
  5. Step 5: Solve for x
    x = 308,812,500.18/20,090.94
  6. Step 6: Final answer
    x = 15,370.73

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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.