Home / 20,705.42-28,563.92-12,201.73

Finding the Fourth Proportional to 20,705.42, 28,563.92 and 12,201.73

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Solution

The fourth proportional to 20,705.42, 28,563.92 and 12,201.73 is: 16,832.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,705.42 : 28,563.92 = 12,201.73 : x
  2. Step 2: Convert to fraction form
    20,705.42/28,563.92 = 12,201.73/x
  3. Step 3: Cross multiply
    20,705.42x = 28,563.92 × 12,201.73
  4. Step 4: Simplify right side
    20,705.42x = 348,529,239.58
  5. Step 5: Solve for x
    x = 348,529,239.58/20,705.42
  6. Step 6: Final answer
    x = 16,832.75

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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.