Home / 20,822.34-28,734.09-11,872.73

Finding the Fourth Proportional to 20,822.34, 28,734.09 and 11,872.73

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Solution

The fourth proportional to 20,822.34, 28,734.09 and 11,872.73 is: 16,383.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,822.34 : 28,734.09 = 11,872.73 : x
  2. Step 2: Convert to fraction form
    20,822.34/28,734.09 = 11,872.73/x
  3. Step 3: Cross multiply
    20,822.34x = 28,734.09 × 11,872.73
  4. Step 4: Simplify right side
    20,822.34x = 341,152,092.37
  5. Step 5: Solve for x
    x = 341,152,092.37/20,822.34
  6. Step 6: Final answer
    x = 16,383.95

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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.