Home / 19,202.75-28,815.47-8,108.72

Finding the Fourth Proportional to 19,202.75, 28,815.47 and 8,108.72

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Solution

The fourth proportional to 19,202.75, 28,815.47 and 8,108.72 is: 12,167.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,202.75 : 28,815.47 = 8,108.72 : x
  2. Step 2: Convert to fraction form
    19,202.75/28,815.47 = 8,108.72/x
  3. Step 3: Cross multiply
    19,202.75x = 28,815.47 × 8,108.72
  4. Step 4: Simplify right side
    19,202.75x = 233,656,577.90
  5. Step 5: Solve for x
    x = 233,656,577.90/19,202.75
  6. Step 6: Final answer
    x = 12,167.87

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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.