Home / 20,729.06-31,099.83-7,400.36

Finding the Fourth Proportional to 20,729.06, 31,099.83 and 7,400.36

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Solution

The fourth proportional to 20,729.06, 31,099.83 and 7,400.36 is: 11,102.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.06 : 31,099.83 = 7,400.36 : x
  2. Step 2: Convert to fraction form
    20,729.06/31,099.83 = 7,400.36/x
  3. Step 3: Cross multiply
    20,729.06x = 31,099.83 × 7,400.36
  4. Step 4: Simplify right side
    20,729.06x = 230,150,029.56
  5. Step 5: Solve for x
    x = 230,150,029.56/20,729.06
  6. Step 6: Final answer
    x = 11,102.77

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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.