Home / 13,312.13-19,964.78-3,949.94

Finding the Fourth Proportional to 13,312.13, 19,964.78 and 3,949.94

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Solution

The fourth proportional to 13,312.13, 19,964.78 and 3,949.94 is: 5,923.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,312.13 : 19,964.78 = 3,949.94 : x
  2. Step 2: Convert to fraction form
    13,312.13/19,964.78 = 3,949.94/x
  3. Step 3: Cross multiply
    13,312.13x = 19,964.78 × 3,949.94
  4. Step 4: Simplify right side
    13,312.13x = 78,859,626.90
  5. Step 5: Solve for x
    x = 78,859,626.90/13,312.13
  6. Step 6: Final answer
    x = 5,923.89

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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.