Home / 20,090.70-27,725.37-11,138.34

Finding the Fourth Proportional to 20,090.70, 27,725.37 and 11,138.34

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Solution

The fourth proportional to 20,090.70, 27,725.37 and 11,138.34 is: 15,371.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.70 : 27,725.37 = 11,138.34 : x
  2. Step 2: Convert to fraction form
    20,090.70/27,725.37 = 11,138.34/x
  3. Step 3: Cross multiply
    20,090.70x = 27,725.37 × 11,138.34
  4. Step 4: Simplify right side
    20,090.70x = 308,814,597.69
  5. Step 5: Solve for x
    x = 308,814,597.69/20,090.70
  6. Step 6: Final answer
    x = 15,371.02

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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.