Anaconda automatic partitioning left me with only 15GB of my 225GB drive. How can I resize my root partition considering I've chosen encryption?

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Hello, during installation I mindlessly selected automatic partitioning thinking it would use all the space in the disk, instead I'm left with only 15GB:

$ lsblk
sda                                             8:0    0 223.6G  0 disk  
├─sda1                                          8:1    0   200M  0 part  /boot/efi
├─sda2                                          8:2    0     1G  0 part  /boot
├─sda3                                          8:3    0   7.8G  0 part  
│ └─luks-24e38290-a2cd-41e8-899d-dea0c23c4514 253:1    0   7.8G  0 crypt [SWAP]
└─sda4                                          8:4    0    15G  0 part  
  └─luks-38a7a29b-8f50-47ef-8fca-8b069245fb56 253:0    0    15G  0 crypt /
sr0                                            11:0    1  1024M  0 rom

Is there a way to resize the root partition or should I just install again?