Quote (Simens @ Oct 8 2013 03:04pm)
nope
you're looking for the present value of annuities
given as
http://i.investopedia.com/inv/dictionary/terms/pvannuity.gif
where
C = Cash flow per period
i = Interest rate
n = Number of payments
/e: this assumes that the first withdrawal happens 1 year after the bank account has this value.
so at time 0 the account must have the PV you find with the equation in order to make the first payout at time 1, which is one year later
yeah, my bad, I read the question too quckly. Thought it was just asking how much put in to get 4000 after 15 years lol.