Home / 19,180.94-28,771.34-8,638.62

Finding the Fourth Proportional to 19,180.94, 28,771.34 and 8,638.62

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Solution

The fourth proportional to 19,180.94, 28,771.34 and 8,638.62 is: 12,957.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,180.94 : 28,771.34 = 8,638.62 : x
  2. Step 2: Convert to fraction form
    19,180.94/28,771.34 = 8,638.62/x
  3. Step 3: Cross multiply
    19,180.94x = 28,771.34 × 8,638.62
  4. Step 4: Simplify right side
    19,180.94x = 248,544,629.96
  5. Step 5: Solve for x
    x = 248,544,629.96/19,180.94
  6. Step 6: Final answer
    x = 12,957.90

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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.