Home / 12,084.88-18,129.40-3,764.28

Finding the Fourth Proportional to 12,084.88, 18,129.40 and 3,764.28

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Solution

The fourth proportional to 12,084.88, 18,129.40 and 3,764.28 is: 5,647.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,084.88 : 18,129.40 = 3,764.28 : x
  2. Step 2: Convert to fraction form
    12,084.88/18,129.40 = 3,764.28/x
  3. Step 3: Cross multiply
    12,084.88x = 18,129.40 × 3,764.28
  4. Step 4: Simplify right side
    12,084.88x = 68,244,137.83
  5. Step 5: Solve for x
    x = 68,244,137.83/12,084.88
  6. Step 6: Final answer
    x = 5,647.07

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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.