Home / 21,212.74-31,819.92-7,173.01

Finding the Fourth Proportional to 21,212.74, 31,819.92 and 7,173.01

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Solution

The fourth proportional to 21,212.74, 31,819.92 and 7,173.01 is: 10,759.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212.74 : 31,819.92 = 7,173.01 : x
  2. Step 2: Convert to fraction form
    21,212.74/31,819.92 = 7,173.01/x
  3. Step 3: Cross multiply
    21,212.74x = 31,819.92 × 7,173.01
  4. Step 4: Simplify right side
    21,212.74x = 228,244,604.36
  5. Step 5: Solve for x
    x = 228,244,604.36/21,212.74
  6. Step 6: Final answer
    x = 10,759.79

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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.