Home / 13,759.38-20,639.46-3,371.12

Finding the Fourth Proportional to 13,759.38, 20,639.46 and 3,371.12

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Solution

The fourth proportional to 13,759.38, 20,639.46 and 3,371.12 is: 5,056.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,759.38 : 20,639.46 = 3,371.12 : x
  2. Step 2: Convert to fraction form
    13,759.38/20,639.46 = 3,371.12/x
  3. Step 3: Cross multiply
    13,759.38x = 20,639.46 × 3,371.12
  4. Step 4: Simplify right side
    13,759.38x = 69,578,096.40
  5. Step 5: Solve for x
    x = 69,578,096.40/13,759.38
  6. Step 6: Final answer
    x = 5,056.78

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1.5x scale

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.