Home / 18,486.75-27,720.39-9,126.39

Finding the Fourth Proportional to 18,486.75, 27,720.39 and 9,126.39

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Solution

The fourth proportional to 18,486.75, 27,720.39 and 9,126.39 is: 13,684.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,486.75 : 27,720.39 = 9,126.39 : x
  2. Step 2: Convert to fraction form
    18,486.75/27,720.39 = 9,126.39/x
  3. Step 3: Cross multiply
    18,486.75x = 27,720.39 × 9,126.39
  4. Step 4: Simplify right side
    18,486.75x = 252,987,090.09
  5. Step 5: Solve for x
    x = 252,987,090.09/18,486.75
  6. Step 6: Final answer
    x = 13,684.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.