Home / 18,319.25-27,479.99-5,172.62

Finding the Fourth Proportional to 18,319.25, 27,479.99 and 5,172.62

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Solution

The fourth proportional to 18,319.25, 27,479.99 and 5,172.62 is: 7,759.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,319.25 : 27,479.99 = 5,172.62 : x
  2. Step 2: Convert to fraction form
    18,319.25/27,479.99 = 5,172.62/x
  3. Step 3: Cross multiply
    18,319.25x = 27,479.99 × 5,172.62
  4. Step 4: Simplify right side
    18,319.25x = 142,143,421.41
  5. Step 5: Solve for x
    x = 142,143,421.41/18,319.25
  6. Step 6: Final answer
    x = 7,759.24

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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.