Good 4th, nah, that was a very quick mental calculation, can't be bothered doing it longhand it will be somewhere near anyway.
Needles to say the bet could be 1/4, 1/5, 1/6, of the bank whatever depending on the S/R etc.
Personally though I think it is futile to pursue a staking plan IF the basic method does not show a profit at level stakes over a long period.
Mind you that is only after me trying to make a loser into a winner using many methods over many years.