Home / 13,722.75-20,571.91-4,955.72

Finding the Fourth Proportional to 13,722.75, 20,571.91 and 4,955.72

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Solution

The fourth proportional to 13,722.75, 20,571.91 and 4,955.72 is: 7,429.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.75 : 20,571.91 = 4,955.72 : x
  2. Step 2: Convert to fraction form
    13,722.75/20,571.91 = 4,955.72/x
  3. Step 3: Cross multiply
    13,722.75x = 20,571.91 × 4,955.72
  4. Step 4: Simplify right side
    13,722.75x = 101,948,510.58
  5. Step 5: Solve for x
    x = 101,948,510.58/13,722.75
  6. Step 6: Final answer
    x = 7,429.16

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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.