Home / 20,692.32-28,555.68-11,739.60

Finding the Fourth Proportional to 20,692.32, 28,555.68 and 11,739.60

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Solution

The fourth proportional to 20,692.32, 28,555.68 and 11,739.60 is: 16,200.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,692.32 : 28,555.68 = 11,739.60 : x
  2. Step 2: Convert to fraction form
    20,692.32/28,555.68 = 11,739.60/x
  3. Step 3: Cross multiply
    20,692.32x = 28,555.68 × 11,739.60
  4. Step 4: Simplify right side
    20,692.32x = 335,232,260.93
  5. Step 5: Solve for x
    x = 335,232,260.93/20,692.32
  6. Step 6: Final answer
    x = 16,200.81

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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.