Home / 20,228.15-30,322.63-7,738.56

Finding the Fourth Proportional to 20,228.15, 30,322.63 and 7,738.56

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Solution

The fourth proportional to 20,228.15, 30,322.63 and 7,738.56 is: 11,600.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,228.15 : 30,322.63 = 7,738.56 : x
  2. Step 2: Convert to fraction form
    20,228.15/30,322.63 = 7,738.56/x
  3. Step 3: Cross multiply
    20,228.15x = 30,322.63 × 7,738.56
  4. Step 4: Simplify right side
    20,228.15x = 234,653,340.00
  5. Step 5: Solve for x
    x = 234,653,340.00/20,228.15
  6. Step 6: Final answer
    x = 11,600.34

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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.