Home / 20,495.85-28,286.30-11,997.46

Finding the Fourth Proportional to 20,495.85, 28,286.30 and 11,997.46

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Solution

The fourth proportional to 20,495.85, 28,286.30 and 11,997.46 is: 16,557.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,495.85 : 28,286.30 = 11,997.46 : x
  2. Step 2: Convert to fraction form
    20,495.85/28,286.30 = 11,997.46/x
  3. Step 3: Cross multiply
    20,495.85x = 28,286.30 × 11,997.46
  4. Step 4: Simplify right side
    20,495.85x = 339,363,692.81
  5. Step 5: Solve for x
    x = 339,363,692.81/20,495.85
  6. Step 6: Final answer
    x = 16,557.68

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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.