Home / 12,102.06-16,700.22-8,122.62

Finding the Fourth Proportional to 12,102.06, 16,700.22 and 8,122.62

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Solution

The fourth proportional to 12,102.06, 16,700.22 and 8,122.62 is: 11,208.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,102.06 : 16,700.22 = 8,122.62 : x
  2. Step 2: Convert to fraction form
    12,102.06/16,700.22 = 8,122.62/x
  3. Step 3: Cross multiply
    12,102.06x = 16,700.22 × 8,122.62
  4. Step 4: Simplify right side
    12,102.06x = 135,649,540.98
  5. Step 5: Solve for x
    x = 135,649,540.98/12,102.06
  6. Step 6: Final answer
    x = 11,208.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.