Home / 13,885.98-20,828.97-3,498.54

Finding the Fourth Proportional to 13,885.98, 20,828.97 and 3,498.54

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Solution

The fourth proportional to 13,885.98, 20,828.97 and 3,498.54 is: 5,247.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,885.98 : 20,828.97 = 3,498.54 : x
  2. Step 2: Convert to fraction form
    13,885.98/20,828.97 = 3,498.54/x
  3. Step 3: Cross multiply
    13,885.98x = 20,828.97 × 3,498.54
  4. Step 4: Simplify right side
    13,885.98x = 72,870,984.70
  5. Step 5: Solve for x
    x = 72,870,984.70/13,885.98
  6. Step 6: Final answer
    x = 5,247.81

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Similar ratio
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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.