Home / 21,121,379.97-29,142,508.64-11,954,022.45

Finding the Fourth Proportional to 21,121,379.97, 29,142,508.64 and 11,954,022.45

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Solution

The fourth proportional to 21,121,379.97, 29,142,508.64 and 11,954,022.45 is: 16,493,723.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,121,379.97 : 29,142,508.64 = 11,954,022.45 : x
  2. Step 2: Convert to fraction form
    21,121,379.97/29,142,508.64 = 11,954,022.45/x
  3. Step 3: Cross multiply
    21,121,379.97x = 29,142,508.64 × 11,954,022.45
  4. Step 4: Simplify right side
    21,121,379.97x = 348,370,202,472,108.88
  5. Step 5: Solve for x
    x = 348,370,202,472,108.88/21,121,379.97
  6. Step 6: Final answer
    x = 16,493,723.56

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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.