Home / 20,809,279.03-28,715,922.36-11,515,979.97

Finding the Fourth Proportional to 20,809,279.03, 28,715,922.36 and 11,515,979.97

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Solution

The fourth proportional to 20,809,279.03, 28,715,922.36 and 11,515,979.97 is: 15,891,563.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,809,279.03 : 28,715,922.36 = 11,515,979.97 : x
  2. Step 2: Convert to fraction form
    20,809,279.03/28,715,922.36 = 11,515,979.97/x
  3. Step 3: Cross multiply
    20,809,279.03x = 28,715,922.36 × 11,515,979.97
  4. Step 4: Simplify right side
    20,809,279.03x = 330,691,986,637,085.94
  5. Step 5: Solve for x
    x = 330,691,986,637,085.94/20,809,279.03
  6. Step 6: Final answer
    x = 15,891,563.86

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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.