Home / 20,790,331.26-28,687,469.79-11,968,077.20

Finding the Fourth Proportional to 20,790,331.26, 28,687,469.79 and 11,968,077.20

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Solution

The fourth proportional to 20,790,331.26, 28,687,469.79 and 11,968,077.20 is: 16,514,111.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790,331.26 : 28,687,469.79 = 11,968,077.20 : x
  2. Step 2: Convert to fraction form
    20,790,331.26/28,687,469.79 = 11,968,077.20/x
  3. Step 3: Cross multiply
    20,790,331.26x = 28,687,469.79 × 11,968,077.20
  4. Step 4: Simplify right side
    20,790,331.26x = 343,333,853,101,499.88
  5. Step 5: Solve for x
    x = 343,333,853,101,499.88/20,790,331.26
  6. Step 6: Final answer
    x = 16,514,111.72

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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.