Home / 27,380.11-37,781.37-15,443.64

Finding the Fourth Proportional to 27,380.11, 37,781.37 and 15,443.64

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Solution

The fourth proportional to 27,380.11, 37,781.37 and 15,443.64 is: 21,310.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,380.11 : 37,781.37 = 15,443.64 : x
  2. Step 2: Convert to fraction form
    27,380.11/37,781.37 = 15,443.64/x
  3. Step 3: Cross multiply
    27,380.11x = 37,781.37 × 15,443.64
  4. Step 4: Simplify right side
    27,380.11x = 583,481,982.13
  5. Step 5: Solve for x
    x = 583,481,982.13/27,380.11
  6. Step 6: Final answer
    x = 21,310.44

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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.