Home / 20,674.89-28,531.56-11,243.43

Finding the Fourth Proportional to 20,674.89, 28,531.56 and 11,243.43

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Solution

The fourth proportional to 20,674.89, 28,531.56 and 11,243.43 is: 15,516.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674.89 : 28,531.56 = 11,243.43 : x
  2. Step 2: Convert to fraction form
    20,674.89/28,531.56 = 11,243.43/x
  3. Step 3: Cross multiply
    20,674.89x = 28,531.56 × 11,243.43
  4. Step 4: Simplify right side
    20,674.89x = 320,792,597.65
  5. Step 5: Solve for x
    x = 320,792,597.65/20,674.89
  6. Step 6: Final answer
    x = 15,516.05

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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.