Home / 20,644.83-28,490.39-11,692.20

Finding the Fourth Proportional to 20,644.83, 28,490.39 and 11,692.20

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Solution

The fourth proportional to 20,644.83, 28,490.39 and 11,692.20 is: 16,135.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,644.83 : 28,490.39 = 11,692.20 : x
  2. Step 2: Convert to fraction form
    20,644.83/28,490.39 = 11,692.20/x
  3. Step 3: Cross multiply
    20,644.83x = 28,490.39 × 11,692.20
  4. Step 4: Simplify right side
    20,644.83x = 333,115,323.34
  5. Step 5: Solve for x
    x = 333,115,323.34/20,644.83
  6. Step 6: Final answer
    x = 16,135.54

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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.