Home / 12,192.92-18,272.97-8,890.55

Finding the Fourth Proportional to 12,192.92, 18,272.97 and 8,890.55

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Solution

The fourth proportional to 12,192.92, 18,272.97 and 8,890.55 is: 13,323.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,192.92 : 18,272.97 = 8,890.55 : x
  2. Step 2: Convert to fraction form
    12,192.92/18,272.97 = 8,890.55/x
  3. Step 3: Cross multiply
    12,192.92x = 18,272.97 × 8,890.55
  4. Step 4: Simplify right side
    12,192.92x = 162,456,662.07
  5. Step 5: Solve for x
    x = 162,456,662.07/12,192.92
  6. Step 6: Final answer
    x = 13,323.86

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1.5x scale

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.