Home / 21,163.54-31,729.11-10,483.42

Finding the Fourth Proportional to 21,163.54, 31,729.11 and 10,483.42

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Solution

The fourth proportional to 21,163.54, 31,729.11 and 10,483.42 is: 15,717.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.54 : 31,729.11 = 10,483.42 : x
  2. Step 2: Convert to fraction form
    21,163.54/31,729.11 = 10,483.42/x
  3. Step 3: Cross multiply
    21,163.54x = 31,729.11 × 10,483.42
  4. Step 4: Simplify right side
    21,163.54x = 332,629,586.36
  5. Step 5: Solve for x
    x = 332,629,586.36/21,163.54
  6. Step 6: Final answer
    x = 15,717.11

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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.