Home / 12,216.06-16,855.22-7,179.89

Finding the Fourth Proportional to 12,216.06, 16,855.22 and 7,179.89

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Solution

The fourth proportional to 12,216.06, 16,855.22 and 7,179.89 is: 9,906.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,216.06 : 16,855.22 = 7,179.89 : x
  2. Step 2: Convert to fraction form
    12,216.06/16,855.22 = 7,179.89/x
  3. Step 3: Cross multiply
    12,216.06x = 16,855.22 × 7,179.89
  4. Step 4: Simplify right side
    12,216.06x = 121,018,559.20
  5. Step 5: Solve for x
    x = 121,018,559.20/12,216.06
  6. Step 6: Final answer
    x = 9,906.51

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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.