Home / 13,677.28-20,515.68-3,817.12

Finding the Fourth Proportional to 13,677.28, 20,515.68 and 3,817.12

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Solution

The fourth proportional to 13,677.28, 20,515.68 and 3,817.12 is: 5,725.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,677.28 : 20,515.68 = 3,817.12 : x
  2. Step 2: Convert to fraction form
    13,677.28/20,515.68 = 3,817.12/x
  3. Step 3: Cross multiply
    13,677.28x = 20,515.68 × 3,817.12
  4. Step 4: Simplify right side
    13,677.28x = 78,310,812.44
  5. Step 5: Solve for x
    x = 78,310,812.44/13,677.28
  6. Step 6: Final answer
    x = 5,725.61

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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.