Home / 20,791.26-28,692.36-11,360.43

Finding the Fourth Proportional to 20,791.26, 28,692.36 and 11,360.43

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Solution

The fourth proportional to 20,791.26, 28,692.36 and 11,360.43 is: 15,677.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,791.26 : 28,692.36 = 11,360.43 : x
  2. Step 2: Convert to fraction form
    20,791.26/28,692.36 = 11,360.43/x
  3. Step 3: Cross multiply
    20,791.26x = 28,692.36 × 11,360.43
  4. Step 4: Simplify right side
    20,791.26x = 325,957,547.31
  5. Step 5: Solve for x
    x = 325,957,547.31/20,791.26
  6. Step 6: Final answer
    x = 15,677.62

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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.