Home / 19,216.40-28,819.80-7,367.60

Finding the Fourth Proportional to 19,216.40, 28,819.80 and 7,367.60

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Solution

The fourth proportional to 19,216.40, 28,819.80 and 7,367.60 is: 11,049.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,216.40 : 28,819.80 = 7,367.60 : x
  2. Step 2: Convert to fraction form
    19,216.40/28,819.80 = 7,367.60/x
  3. Step 3: Cross multiply
    19,216.40x = 28,819.80 × 7,367.60
  4. Step 4: Simplify right side
    19,216.40x = 212,332,758.48
  5. Step 5: Solve for x
    x = 212,332,758.48/19,216.40
  6. Step 6: Final answer
    x = 11,049.56

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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.