Home / 20,992.26-28,968.93-11,560.62

Finding the Fourth Proportional to 20,992.26, 28,968.93 and 11,560.62

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Solution

The fourth proportional to 20,992.26, 28,968.93 and 11,560.62 is: 15,953.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,992.26 : 28,968.93 = 11,560.62 : x
  2. Step 2: Convert to fraction form
    20,992.26/28,968.93 = 11,560.62/x
  3. Step 3: Cross multiply
    20,992.26x = 28,968.93 × 11,560.62
  4. Step 4: Simplify right side
    20,992.26x = 334,898,791.54
  5. Step 5: Solve for x
    x = 334,898,791.54/20,992.26
  6. Step 6: Final answer
    x = 15,953.44

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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.