Home / 20,791.50-28,692.27-11,360.13

Finding the Fourth Proportional to 20,791.50, 28,692.27 and 11,360.13

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Solution

The fourth proportional to 20,791.50, 28,692.27 and 11,360.13 is: 15,676.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,791.50 : 28,692.27 = 11,360.13 : x
  2. Step 2: Convert to fraction form
    20,791.50/28,692.27 = 11,360.13/x
  3. Step 3: Cross multiply
    20,791.50x = 28,692.27 × 11,360.13
  4. Step 4: Simplify right side
    20,791.50x = 325,947,917.20
  5. Step 5: Solve for x
    x = 325,947,917.20/20,791.50
  6. Step 6: Final answer
    x = 15,676.98

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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.