Home / 20,208.06-27,889.11-12,252.78

Finding the Fourth Proportional to 20,208.06, 27,889.11 and 12,252.78

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Solution

The fourth proportional to 20,208.06, 27,889.11 and 12,252.78 is: 16,910.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208.06 : 27,889.11 = 12,252.78 : x
  2. Step 2: Convert to fraction form
    20,208.06/27,889.11 = 12,252.78/x
  3. Step 3: Cross multiply
    20,208.06x = 27,889.11 × 12,252.78
  4. Step 4: Simplify right side
    20,208.06x = 341,719,129.23
  5. Step 5: Solve for x
    x = 341,719,129.23/20,208.06
  6. Step 6: Final answer
    x = 16,910.04

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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.