Home / 21,163.44-31,738.80-13,277.92

Finding the Fourth Proportional to 21,163.44, 31,738.80 and 13,277.92

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Solution

The fourth proportional to 21,163.44, 31,738.80 and 13,277.92 is: 19,912.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.44 : 31,738.80 = 13,277.92 : x
  2. Step 2: Convert to fraction form
    21,163.44/31,738.80 = 13,277.92/x
  3. Step 3: Cross multiply
    21,163.44x = 31,738.80 × 13,277.92
  4. Step 4: Simplify right side
    21,163.44x = 421,425,247.30
  5. Step 5: Solve for x
    x = 421,425,247.30/21,163.44
  6. Step 6: Final answer
    x = 19,912.89

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1.5x scale

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.