Home / 12,084.80-18,126.32-3,318.96

Finding the Fourth Proportional to 12,084.80, 18,126.32 and 3,318.96

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Solution

The fourth proportional to 12,084.80, 18,126.32 and 3,318.96 is: 4,978.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,084.80 : 18,126.32 = 3,318.96 : x
  2. Step 2: Convert to fraction form
    12,084.80/18,126.32 = 3,318.96/x
  3. Step 3: Cross multiply
    12,084.80x = 18,126.32 × 3,318.96
  4. Step 4: Simplify right side
    12,084.80x = 60,160,531.03
  5. Step 5: Solve for x
    x = 60,160,531.03/12,084.80
  6. Step 6: Final answer
    x = 4,978.20

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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.