In late 2017, Apple had a P/E ratio of 17.5 and analysts were projecting eamings growth of 18.35% per year for 2018,2019 , and 2020 . What was Apple's PEG ratio? The PEG ratio is (Round to two decimal places.) In late 2017, Apple had a P/E ratio of 17.5 and analysts were projecting eamings growth of 18.35% per year for 2018,2019 , and 2020 . What was Apple's PEG ratio? The PEG ratio is (Round to two decimal places.)