Home / 13,817.70-20,728.07-3,958.58

Finding the Fourth Proportional to 13,817.70, 20,728.07 and 3,958.58

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Solution

The fourth proportional to 13,817.70, 20,728.07 and 3,958.58 is: 5,938.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,817.70 : 20,728.07 = 3,958.58 : x
  2. Step 2: Convert to fraction form
    13,817.70/20,728.07 = 3,958.58/x
  3. Step 3: Cross multiply
    13,817.70x = 20,728.07 × 3,958.58
  4. Step 4: Simplify right side
    13,817.70x = 82,053,599.91
  5. Step 5: Solve for x
    x = 82,053,599.91/13,817.70
  6. Step 6: Final answer
    x = 5,938.30

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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.