Home / 20,692.94-28,558.24-12,739.82

Finding the Fourth Proportional to 20,692.94, 28,558.24 and 12,739.82

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Solution

The fourth proportional to 20,692.94, 28,558.24 and 12,739.82 is: 17,582.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,692.94 : 28,558.24 = 12,739.82 : x
  2. Step 2: Convert to fraction form
    20,692.94/28,558.24 = 12,739.82/x
  3. Step 3: Cross multiply
    20,692.94x = 28,558.24 × 12,739.82
  4. Step 4: Simplify right side
    20,692.94x = 363,826,662.48
  5. Step 5: Solve for x
    x = 363,826,662.48/20,692.94
  6. Step 6: Final answer
    x = 17,582.17

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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.