Home / 20,992.44-28,969.56-11,561.04

Finding the Fourth Proportional to 20,992.44, 28,969.56 and 11,561.04

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Solution

The fourth proportional to 20,992.44, 28,969.56 and 11,561.04 is: 15,954.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,992.44 : 28,969.56 = 11,561.04 : x
  2. Step 2: Convert to fraction form
    20,992.44/28,969.56 = 11,561.04/x
  3. Step 3: Cross multiply
    20,992.44x = 28,969.56 × 11,561.04
  4. Step 4: Simplify right side
    20,992.44x = 334,918,241.94
  5. Step 5: Solve for x
    x = 334,918,241.94/20,992.44
  6. Step 6: Final answer
    x = 15,954.23

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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.