Home / 18,322.88-27,481.16-5,172.18

Finding the Fourth Proportional to 18,322.88, 27,481.16 and 5,172.18

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Solution

The fourth proportional to 18,322.88, 27,481.16 and 5,172.18 is: 7,757.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,322.88 : 27,481.16 = 5,172.18 : x
  2. Step 2: Convert to fraction form
    18,322.88/27,481.16 = 5,172.18/x
  3. Step 3: Cross multiply
    18,322.88x = 27,481.16 × 5,172.18
  4. Step 4: Simplify right side
    18,322.88x = 142,137,506.13
  5. Step 5: Solve for x
    x = 142,137,506.13/18,322.88
  6. Step 6: Final answer
    x = 7,757.38

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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.