Home / 13,247.75-19,880.74-5,456.56

Finding the Fourth Proportional to 13,247.75, 19,880.74 and 5,456.56

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Solution

The fourth proportional to 13,247.75, 19,880.74 and 5,456.56 is: 8,188.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,247.75 : 19,880.74 = 5,456.56 : x
  2. Step 2: Convert to fraction form
    13,247.75/19,880.74 = 5,456.56/x
  3. Step 3: Cross multiply
    13,247.75x = 19,880.74 × 5,456.56
  4. Step 4: Simplify right side
    13,247.75x = 108,480,450.65
  5. Step 5: Solve for x
    x = 108,480,450.65/13,247.75
  6. Step 6: Final answer
    x = 8,188.59

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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.