Home / 13,891.28-20,836.86-3,503

Finding the Fourth Proportional to 13,891.28, 20,836.86 and 3,503

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Solution

The fourth proportional to 13,891.28, 20,836.86 and 3,503 is: 5,254.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,891.28 : 20,836.86 = 3,503 : x
  2. Step 2: Convert to fraction form
    13,891.28/20,836.86 = 3,503/x
  3. Step 3: Cross multiply
    13,891.28x = 20,836.86 × 3,503
  4. Step 4: Simplify right side
    13,891.28x = 72,991,520.58
  5. Step 5: Solve for x
    x = 72,991,520.58/13,891.28
  6. Step 6: Final answer
    x = 5,254.48

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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.