Home / 20,090.49-27,725.53-11,138.82

Finding the Fourth Proportional to 20,090.49, 27,725.53 and 11,138.82

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Solution

The fourth proportional to 20,090.49, 27,725.53 and 11,138.82 is: 15,371.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.49 : 27,725.53 = 11,138.82 : x
  2. Step 2: Convert to fraction form
    20,090.49/27,725.53 = 11,138.82/x
  3. Step 3: Cross multiply
    20,090.49x = 27,725.53 × 11,138.82
  4. Step 4: Simplify right side
    20,090.49x = 308,829,729.54
  5. Step 5: Solve for x
    x = 308,829,729.54/20,090.49
  6. Step 6: Final answer
    x = 15,371.94

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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.