Home / 13,763.87-20,639.30-5,334.32

Finding the Fourth Proportional to 13,763.87, 20,639.30 and 5,334.32

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Solution

The fourth proportional to 13,763.87, 20,639.30 and 5,334.32 is: 7,998.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,763.87 : 20,639.30 = 5,334.32 : x
  2. Step 2: Convert to fraction form
    13,763.87/20,639.30 = 5,334.32/x
  3. Step 3: Cross multiply
    13,763.87x = 20,639.30 × 5,334.32
  4. Step 4: Simplify right side
    13,763.87x = 110,096,500.91
  5. Step 5: Solve for x
    x = 110,096,500.91/13,763.87
  6. Step 6: Final answer
    x = 7,998.95

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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.