Home / 20,644.95-28,490.56-11,692.33

Finding the Fourth Proportional to 20,644.95, 28,490.56 and 11,692.33

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Solution

The fourth proportional to 20,644.95, 28,490.56 and 11,692.33 is: 16,135.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,644.95 : 28,490.56 = 11,692.33 : x
  2. Step 2: Convert to fraction form
    20,644.95/28,490.56 = 11,692.33/x
  3. Step 3: Cross multiply
    20,644.95x = 28,490.56 × 11,692.33
  4. Step 4: Simplify right side
    20,644.95x = 333,120,886.95
  5. Step 5: Solve for x
    x = 333,120,886.95/20,644.95
  6. Step 6: Final answer
    x = 16,135.71

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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.