The 49ers' 8th match was an Interconference duel with the Broncos at Wembley Stadium. In the first quarter the 49ers took the lead as kicker Joe Nedney got a 34-yard field goal. They soon trailed in the third quarter when QB Tim Tebow scrambled 1 yard for a touchdown; followed in the fourth quarter by kicker Matt Prater hitting a 32-yard field goal. They soon went on a scoring rally to take the lead with QB Troy Smith scrambling a yard for a touchdown, followed by his 28-yard TD pass to WR Michael Crabtree. Then RB Frank Gore got a 3-yard TD run to put the 49ers up 24-10. The lead was narrowed when QB Kyle Orton made a 1-yard TD pass to WR Brandon Lloyd (with a failed PAT). With the win, the 49ers went into their bye week at 2-6.

Based on the above article, answer a question. How many more touchdowns were scored in the fourth quarter than the other three quarters?
3