Home / 20,230.09-27,906.11-12,765.13

Finding the Fourth Proportional to 20,230.09, 27,906.11 and 12,765.13

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Solution

The fourth proportional to 20,230.09, 27,906.11 and 12,765.13 is: 17,608.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,230.09 : 27,906.11 = 12,765.13 : x
  2. Step 2: Convert to fraction form
    20,230.09/27,906.11 = 12,765.13/x
  3. Step 3: Cross multiply
    20,230.09x = 27,906.11 × 12,765.13
  4. Step 4: Simplify right side
    20,230.09x = 356,225,121.94
  5. Step 5: Solve for x
    x = 356,225,121.94/20,230.09
  6. Step 6: Final answer
    x = 17,608.68

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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.