Home / 12,356.80-18,530.88-3,589.28

Finding the Fourth Proportional to 12,356.80, 18,530.88 and 3,589.28

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Solution

The fourth proportional to 12,356.80, 18,530.88 and 3,589.28 is: 5,382.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,356.80 : 18,530.88 = 3,589.28 : x
  2. Step 2: Convert to fraction form
    12,356.80/18,530.88 = 3,589.28/x
  3. Step 3: Cross multiply
    12,356.80x = 18,530.88 × 3,589.28
  4. Step 4: Simplify right side
    12,356.80x = 66,512,516.97
  5. Step 5: Solve for x
    x = 66,512,516.97/12,356.80
  6. Step 6: Final answer
    x = 5,382.67

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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.