Home / 18,318.97-27,479.62-5,172.37

Finding the Fourth Proportional to 18,318.97, 27,479.62 and 5,172.37

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Solution

The fourth proportional to 18,318.97, 27,479.62 and 5,172.37 is: 7,758.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,318.97 : 27,479.62 = 5,172.37 : x
  2. Step 2: Convert to fraction form
    18,318.97/27,479.62 = 5,172.37/x
  3. Step 3: Cross multiply
    18,318.97x = 27,479.62 × 5,172.37
  4. Step 4: Simplify right side
    18,318.97x = 142,134,762.10
  5. Step 5: Solve for x
    x = 142,134,762.10/18,318.97
  6. Step 6: Final answer
    x = 7,758.88

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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.