Home / 20,790,331.44-28,687,470.05-11,968,077.39

Finding the Fourth Proportional to 20,790,331.44, 28,687,470.05 and 11,968,077.39

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Solution

The fourth proportional to 20,790,331.44, 28,687,470.05 and 11,968,077.39 is: 16,514,111.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790,331.44 : 28,687,470.05 = 11,968,077.39 : x
  2. Step 2: Convert to fraction form
    20,790,331.44/28,687,470.05 = 11,968,077.39/x
  3. Step 3: Cross multiply
    20,790,331.44x = 28,687,470.05 × 11,968,077.39
  4. Step 4: Simplify right side
    20,790,331.44x = 343,333,861,604,049.31
  5. Step 5: Solve for x
    x = 343,333,861,604,049.31/20,790,331.44
  6. Step 6: Final answer
    x = 16,514,111.98

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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.