Home / 19,198.56-28,801.20-8,811.36

Finding the Fourth Proportional to 19,198.56, 28,801.20 and 8,811.36

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Solution

The fourth proportional to 19,198.56, 28,801.20 and 8,811.36 is: 13,218.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,198.56 : 28,801.20 = 8,811.36 : x
  2. Step 2: Convert to fraction form
    19,198.56/28,801.20 = 8,811.36/x
  3. Step 3: Cross multiply
    19,198.56x = 28,801.20 × 8,811.36
  4. Step 4: Simplify right side
    19,198.56x = 253,777,741.63
  5. Step 5: Solve for x
    x = 253,777,741.63/19,198.56
  6. Step 6: Final answer
    x = 13,218.58

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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.