Home / 38,420,504.82-53,021,561.31-21,016,451.97

Finding the Fourth Proportional to 38,420,504.82, 53,021,561.31 and 21,016,451.97

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Solution

The fourth proportional to 38,420,504.82, 53,021,561.31 and 21,016,451.97 is: 29,003,395.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,420,504.82 : 53,021,561.31 = 21,016,451.97 : x
  2. Step 2: Convert to fraction form
    38,420,504.82/53,021,561.31 = 21,016,451.97/x
  3. Step 3: Cross multiply
    38,420,504.82x = 53,021,561.31 × 21,016,451.97
  4. Step 4: Simplify right side
    38,420,504.82x = 1,114,325,096,646,025.25
  5. Step 5: Solve for x
    x = 1,114,325,096,646,025.25/38,420,504.82
  6. Step 6: Final answer
    x = 29,003,395.50

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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.