Home / 12,185.16-18,266.80-4,388.52

Finding the Fourth Proportional to 12,185.16, 18,266.80 and 4,388.52

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Solution

The fourth proportional to 12,185.16, 18,266.80 and 4,388.52 is: 6,578.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,185.16 : 18,266.80 = 4,388.52 : x
  2. Step 2: Convert to fraction form
    12,185.16/18,266.80 = 4,388.52/x
  3. Step 3: Cross multiply
    12,185.16x = 18,266.80 × 4,388.52
  4. Step 4: Simplify right side
    12,185.16x = 80,164,217.14
  5. Step 5: Solve for x
    x = 80,164,217.14/12,185.16
  6. Step 6: Final answer
    x = 6,578.84

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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.