Home / 13,817.12-20,728.44-3,956.45

Finding the Fourth Proportional to 13,817.12, 20,728.44 and 3,956.45

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Solution

The fourth proportional to 13,817.12, 20,728.44 and 3,956.45 is: 5,935.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,817.12 : 20,728.44 = 3,956.45 : x
  2. Step 2: Convert to fraction form
    13,817.12/20,728.44 = 3,956.45/x
  3. Step 3: Cross multiply
    13,817.12x = 20,728.44 × 3,956.45
  4. Step 4: Simplify right side
    13,817.12x = 82,010,932.80
  5. Step 5: Solve for x
    x = 82,010,932.80/13,817.12
  6. Step 6: Final answer
    x = 5,935.46

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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.