Home / 13,722.72-20,571.77-4,955.58

Finding the Fourth Proportional to 13,722.72, 20,571.77 and 4,955.58

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Solution

The fourth proportional to 13,722.72, 20,571.77 and 4,955.58 is: 7,428.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.72 : 20,571.77 = 4,955.58 : x
  2. Step 2: Convert to fraction form
    13,722.72/20,571.77 = 4,955.58/x
  3. Step 3: Cross multiply
    13,722.72x = 20,571.77 × 4,955.58
  4. Step 4: Simplify right side
    13,722.72x = 101,945,064.37
  5. Step 5: Solve for x
    x = 101,945,064.37/13,722.72
  6. Step 6: Final answer
    x = 7,428.93

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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.