Home / 20,997-28,974.90-12,043.94

Finding the Fourth Proportional to 20,997, 28,974.90 and 12,043.94

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Solution

The fourth proportional to 20,997, 28,974.90 and 12,043.94 is: 16,620.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997 : 28,974.90 = 12,043.94 : x
  2. Step 2: Convert to fraction form
    20,997/28,974.90 = 12,043.94/x
  3. Step 3: Cross multiply
    20,997x = 28,974.90 × 12,043.94
  4. Step 4: Simplify right side
    20,997x = 348,971,957.11
  5. Step 5: Solve for x
    x = 348,971,957.11/20,997
  6. Step 6: Final answer
    x = 16,620.09

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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.