Home / 21,267.86-31,903.26-7,222.16

Finding the Fourth Proportional to 21,267.86, 31,903.26 and 7,222.16

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Solution

The fourth proportional to 21,267.86, 31,903.26 and 7,222.16 is: 10,833.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,267.86 : 31,903.26 = 7,222.16 : x
  2. Step 2: Convert to fraction form
    21,267.86/31,903.26 = 7,222.16/x
  3. Step 3: Cross multiply
    21,267.86x = 31,903.26 × 7,222.16
  4. Step 4: Simplify right side
    21,267.86x = 230,410,288.73
  5. Step 5: Solve for x
    x = 230,410,288.73/21,267.86
  6. Step 6: Final answer
    x = 10,833.73

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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.