Home / 20,791.35-28,692.01-11,359.98

Finding the Fourth Proportional to 20,791.35, 28,692.01 and 11,359.98

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Solution

The fourth proportional to 20,791.35, 28,692.01 and 11,359.98 is: 15,676.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,791.35 : 28,692.01 = 11,359.98 : x
  2. Step 2: Convert to fraction form
    20,791.35/28,692.01 = 11,359.98/x
  3. Step 3: Cross multiply
    20,791.35x = 28,692.01 × 11,359.98
  4. Step 4: Simplify right side
    20,791.35x = 325,940,459.50
  5. Step 5: Solve for x
    x = 325,940,459.50/20,791.35
  6. Step 6: Final answer
    x = 15,676.74

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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.