Home / 21,155,876.82-29,199,296.88-13,722,750.36

Finding the Fourth Proportional to 21,155,876.82, 29,199,296.88 and 13,722,750.36

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Solution

The fourth proportional to 21,155,876.82, 29,199,296.88 and 13,722,750.36 is: 18,940,111.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,155,876.82 : 29,199,296.88 = 13,722,750.36 : x
  2. Step 2: Convert to fraction form
    21,155,876.82/29,199,296.88 = 13,722,750.36/x
  3. Step 3: Cross multiply
    21,155,876.82x = 29,199,296.88 × 13,722,750.36
  4. Step 4: Simplify right side
    21,155,876.82x = 400,694,661,771,766.88
  5. Step 5: Solve for x
    x = 400,694,661,771,766.88/21,155,876.82
  6. Step 6: Final answer
    x = 18,940,111.31

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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.