Home / 13,318.79-19,974.74-3,956.30

Finding the Fourth Proportional to 13,318.79, 19,974.74 and 3,956.30

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Solution

The fourth proportional to 13,318.79, 19,974.74 and 3,956.30 is: 5,933.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.79 : 19,974.74 = 3,956.30 : x
  2. Step 2: Convert to fraction form
    13,318.79/19,974.74 = 3,956.30/x
  3. Step 3: Cross multiply
    13,318.79x = 19,974.74 × 3,956.30
  4. Step 4: Simplify right side
    13,318.79x = 79,025,944.21
  5. Step 5: Solve for x
    x = 79,025,944.21/13,318.79
  6. Step 6: Final answer
    x = 5,933.42

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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.