Home / 20,692.25-28,555.31-11,260.88

Finding the Fourth Proportional to 20,692.25, 28,555.31 and 11,260.88

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Solution

The fourth proportional to 20,692.25, 28,555.31 and 11,260.88 is: 15,540.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,692.25 : 28,555.31 = 11,260.88 : x
  2. Step 2: Convert to fraction form
    20,692.25/28,555.31 = 11,260.88/x
  3. Step 3: Cross multiply
    20,692.25x = 28,555.31 × 11,260.88
  4. Step 4: Simplify right side
    20,692.25x = 321,557,919.27
  5. Step 5: Solve for x
    x = 321,557,919.27/20,692.25
  6. Step 6: Final answer
    x = 15,540.02

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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.